I. Plato’s Life. 1. His Youth.—Plato, the son of Aristo,
of a noble Athenian family, was born in the year 429 B. C. It was
the year of the death of Pericles, the second year of the Peloponnesian
war, so fatal to Athens. Born in the centre of Grecian
culture and industry, and descended from an old and noble family,
he received a corresponding education, although no farther tidings
of this have been transmitted to us, than the insignificant names
of his teachers. That the youth growing up under such circumstances
should choose the seclusion of a philosophic life rather
than a political career may seem strange, since many and favorable
opportunities for the latter course lay open before him.
Critias, one of the thirty tyrants, was the cousin of his mother,
and Charmides, who subsequently, under the oligarchic rule at
Athens, found his death at Thrasybulus on the same day with
Critias, was his uncle. Notwithstanding this, he is never known
to have appeared a single time as a public speaker in the assembly
of the people. In view of the rising degeneracy and increasing
political corruption of his native land, he was too proud to court
for himself the favor of the many-headed Demos; and more attached
to Doricism than to the democracy and practice of the
Attic public life, he chose to make science his chief pursuit, rather
than as a patriot to struggle in vain against unavoidable disaster,
and become a martyr to his political opinions. He regarded the
Athenian state as lost, and to hinder its inevitable ruin he would
not bring a useless offering.
2. His Years of Discipline.—A youth of twenty, Plato came
to Socrates, in whose intercourse he spent eight years. Besides
a few doubtful anecdotes, nothing is known more particularly of
this portion of his history. In Xenophon’s Memorabilia (III. 6)
Plato is only once cursorily mentioned, but this in a way that
indicates an intimate relation between the scholar and his master.
Plato himself in his dialogues has transmitted nothing concerning
his personal relations to Socrates; only once (Phæd. p. 59) he
names himself among the intimate friends of Socrates. But the
influence which Socrates exerted upon him, how he recognized in
him the complete representation of a wise man, how he found not
only in his doctrine but also in his life and action the most fruitful
philosophic germs, the significance which the personal character
of his master as an ideal type had for him—all this we learn with
sufficient accuracy from his writings, where he places his own
incomparably more developed philosophical system in the mouth
of his master, whom he makes the centre of his dialogues and the
leader of his discourses.
3. His Years of Travel.—After the death of Socrates 399
B. C, in the thirtieth year of his age, Plato, fearing lest he also
should be met by the incoming reaction against philosophy, left,
in company with other Socraticists, his native city, and betook
himself to Euclid, his former fellow-scholar, the founder of the
Megaric school (cf. § XIII. 4) at Megara. Up to this time a pure
Socraticist, he became greatly animated and energized by his
intercourse with the Megarians, among whom a peculiar philosophical
direction, a modification of Socraticism, was already asserted.
We shall see farther on the influence of this residence at Megara
upon the foundation of his philosophy, and especially upon the
elaboration and confirmation of his doctrine of Ideas. One whole
period of his literary activity and an entire group of his dialogues,
can only be satisfactorily explained by the intellectual stimulus
gained at this place. From Megara, Plato visited Cyrene, Egypt,
Magna-Grecia and Sicily. In Magna-Grecia he became acquainted
with the Pythagorean philosophy, which was then in its highest
bloom. His abode among the Pythagoreans had a marked effect
upon him; as a man it made him more practical, and increased
his zest for life and his interest in public life and social intercourse;
as a philosopher it furnished him with a new incitement
to science, and new motives to literary labor. The traces of the
Pythagorean philosophy may be seen through all the last period
of his literary life; especially his aversion to public and political
life was greatly softened by his intercourse with the Pythagoreans.
While in the Theatætus, he affirmed most positively the incompatibility
of philosophy with public life, we find in his later dialogues,
especially in the Republic and also in the Statesman—upon
which Pythagoreanism seems already to have had an influence—a
returning favor for the actual world, and the well-known
sentence that the ruler must be a philosopher is an expression
very characteristic of this change. His visit to Sicily gave him
the acquaintance of the elder Dionysius and Dion his brother-in-law,
but the philosopher and the tyrant had little in common.
Plato is said to have incurred his displeasure to so high a degree,
that his life was in danger. After about ten years spent in travel,
he returned to Athens in the fortieth year of his age, (389 or 388
B. C.)
4. Plato as Head of the Academy; His Years of Instruction.—On
his return, Plato surrounded himself with a circle of
pupils. The place where he taught was known as the academy, a
gymnasium outside of Athens where Plato had inherited a garden
from his father. Of his school and of his later life, we have only
the most meagre accounts. His life passed evenly along, interrupted
only by a second and third visit to Sicily, where meanwhile
the younger Dionysius had come to the throne. This second
and third residence of Plato at the court of Syracuse abounds in
vicissitudes, and shows us the philosopher in a great variety of
conditions (cf. Plutarch’s Life of Dion); but to us, in estimating
his philosophical character, it is of interest only for the attempt,
which, as seems probable from all accounts, he there made to
realize his ideal of a moral state, and by the philosophical education
of the new ruler to unite philosophy and the reins of government
in one and the same hand, or at least in some way by means
of philosophy to achieve a healthy change in the Sicilian state
constitution. His efforts were however fruitless; the circumstances
were not propitious, and the character of the young Dionysius,
who was one of those mediocre natures who strive after renown
and distinction, but are capable of nothing profound and earnest,
deceived the expectations concerning him which Plato, according
to Dion’s account, thought he had reason to entertain.
When we look at Plato’s philosophical labors in the academy,
we are struck with the different relations to public life which
philosophy already assumes. Instead of carrying philosophy, like
Socrates, into the streets and public places and making it there a
subject of social conversation with any one who desired it, he lived
and labored entirely withdrawn from the movements of the public,
satisfied to influence the pupils who surrounded him. In precisely
the measure in which philosophy becomes a system and the
systematic form is seen to be essential, does it lose its popular
character and begin to demand a scientific training, and to become
a topic for the school, an esoteric affair. Yet such was the respect
for the name of a philosopher, and especially for the name of
Plato, that requests were made to him by different states to compose
for them a book of laws, a work which in some instances it
was said was actually performed. Attended by a retinue of devoted
disciples, among whom were even women disguised as men,
and receiving reiterated demonstrations of respect, he reached
the age of eighty-one years, with his powers of mind unweakened
to the latest moment.
The close of his life seems to have been clouded by disturbances
and divisions which arose in his school under the lead of
Aristotle. Engaged in writing, or as others state it at a marriage
feast, death came upon him as a gentle sleep, 348 B. C.
His remains were buried in the Ceramicus, not far from the
academy.
II. The Inner Development of the Platonic Philosophy
and Writings.—That the Platonic philosophy has a real development,
that it should not be apprehended as a perfectly finished
system to which the different writings stand related as constituent
elements, but that these are rather steps of this inner development,
as it were stages passed over in the philosophical
journeyings of the philosopher—is a view of the highest importance
for the true estimate of Plato’s literary labors.
Plato’s philosophical and literary labors may be divided into
three periods, which we can characterize in different ways. Looking
at them in a chronological or biographical respect, we might
call them respectively the periods of his years of discipline, of
travel, of instruction, or if we view them in reference to the prevailing
external influence under which they were formed, they
might be termed the Socratic, Heraclitic-Eleatic, and the Pythagorean;
or if we looked at the content alone, we might term them
the Anti-Sophistic-Ethic, the Dialectic or mediating, and the systematic
or constructive periods.
The First Period—the Socratic—is marked externally by
the predominance of the dramatic element, and in reference to its
philosophical standpoint, by an adherence to the method and
the fundamental principles of the Socratic doctrine. Not yet
accurately informed of the results of former inquiries, and rather
repelled from the study of the history of philosophy than attracted
to it by the character of the Socratic philosophizing, Plato
confined himself to an analytical treatment of conceptions, particularly
of the conception of virtue, and to a reproducing of his
master, which, though something more than a mere recital of verbal
recollections, had yet no philosophical independence. His
Socrates exhibits the same view of life and the same scientific
standpoint which the historical Socrates of Xenophon had had.
His efforts were thus, like those of his contemporary fellow disciples,
directed prominently toward practical wisdom. His conflicts
however, like those of Socrates, had far more weight against the
prevailing want of science and the shallow sophisms of the day
than for the opposite scientific directions. The whole period
bears an eclectic and hortatory character. The highest point in
which the dialogues of this group culminate is the attempt which
at the same time is found in the Socratic doctrine to determine
the certainty of an absolute content (of an objective reality) to
the good.
The history of the development of the Platonic philosophy
would assume a very different form if the view of some modern
scholars respecting the date of the Phædrus were correct. If, as
they claim, the Phædrus were Plato’s earliest work, this circumstance
would betray from the outset an entirely different course
of culture for him than we could suppose in a mere scholar of
Socrates. The doctrine in this dialogue of the pre-existence of
souls, and their periodical transmigrations, of the relation of
earthly beauty with heavenly truth, of divine inspiration in contrast
to human wisdom, the conception of love,—these and other
Pythagorean ingredients are all so distinct from the original Socratic
doctrine that we must transfer the most of that which Plato
has creatively produced during his whole philosophical career, to
the beginning of his philosophical development. The improbability
of this, and numerous other grounds of objection, claim a
far later composition for this dialogue. Setting aside for the present
the Phædrus, the Platonic development assumes the following
form:
Among the earliest works (if they are genuine) are the small
dialogues which treat of Socratic questions and themes in a Socratic
way. Of these e. g. the Charmides discusses temperance,
the Lysis friendship, the Laches valor, the lesser Hippias knowing
and wilful wrong-doing, the first Alcibiades, the moral and
intellectual qualifications of a statesman, &c. The immaturity
and the crudeness of these dialogues, the use of scenic means
which have only an external relation to the content, the scantiness
and want of independence in the content, the indirect manner
of investigation which lacks a satisfactory and positive result,
the formal and analytical treatment of the conceptions discussed—all
these features indicate the early character of these minor
dialogues.
The Protagoras may be taken as a proper type of the Socratic
period. Since this dialogue, though directing its whole polemic
against the Sophistic philosophy, confined itself almost exclusively
to the outward manifestation of this system, to its influence on
its age and its method of instruction in opposition to that of Socrates,
without entering into the ground and philosophical character
of the doctrine itself, and, still farther, since, when it comes
in a strict sense to philosophize, it confines itself, in an indirect
investigation, to the Socratic conception of virtue according to its
different sides (virtue as knowing, its unity and its teachableness,
cf. § XII. 8,)—it represents in the clearest manner the tendency,
character and want of the first period of Plato’s literary life.
The Gorgias, written soon after the death of Socrates, represents
the third and highest stage of this period. Directed against
the Sophistical identification of pleasure and virtue, of the good
and of the agreeable, i. e. against the affirmation of an absolute
moral relativity, this dialogue maintains the proof that the good,
far from owing its origin only to the right of the stronger, and
thus to the arbitrariness of the subject, has in itself an independent
reality and objective validity, and, consequently, alone is
truly useful, and thus, therefore, the measure of pleasure must
follow the higher measure of the good. In this direct and positive
polemic against the Sophistic doctrine of pleasure, in its tendency
to a view of the good as something firm and abiding, and
secure against all subjective arbitrariness, consists prominently
the advance which the Gorgias makes over the Protagoras.
In the first Socratic period the Platonic philosophizing became
ripe and ready for the reception of Eleatic and Pythagorean
categories. To grapple by means of these categories with the
higher questions of philosophy, and so to free the Socratic philosophy
from its so close connection with practical life, was the task
of the second period.
The Second Period—the dialectic or the Megaric—is marked
externally, by a less prominence of form and poetic contemplation,
and not unfrequently indeed, by obscurity and difficulties of
style, and internally, by the attempt to give a satisfactory mediation
for the Eleatic doctrine and a dialectic foundation for the
doctrine of ideas.
By his exile at Megara, and his journeys to Italy, Plato became
acquainted with other and opposing philosophical directions,
from which he must now separate himself in order to elevate the
Socratic doctrine to its true significance. It was now that he
first learned to know the philosophic theories of the earlier sages,
for whose study the necessary means could not at that period, so
wanting in literary publicity, be found at Athens. By his separation
from these varying standpoints, as his older fellow pupils
had already striven to do, he attempted striding over the narrow
limits of ethical philosophizing, to reach the final ground of knowing,
and to carry out the art of forming conceptions as brought
forward by Socrates, to a science of conceptions, i. e. to the doctrine
of ideas. That all human acting depends upon knowing,
and that all thinking depends upon the conception, were results
to which Plato might already have attained through the scientific
generalization of the Socratic doctrine itself, but now to bring
this Socratic wisdom within the circle of speculative thinking, to
establish dialectically that the conception in its simple unity is
that which abides in the change of phenomena, to disclose the
fundamental principles of knowledge which had been evaded by
Socrates, to grasp the scientific theories of the opposers direct in
their scientific grounds, and follow them out in all their ramifications,—this
is the problem which the Megaric family of dialogues
attempts to solve.
The Theatætus stands at the head of this group. This is
chiefly directed against the Protagorean theory of knowledge,
against the identification of the thinking and the sensible perception,
or against the claim of an objective relativity of all knowledge.
As the Gorgias before it had sought to establish the independent
being of the ethical, so does the Theatætus ascending
from the ethical to the theoretical, endeavor to prove an independent
being and objective reality for the logical conceptions which
lie at the ground of all representation and thinking, in a word, to
prove the objectivity of truth, the fact that there lies a province
of thought immanent in the thinking and independent of the perceptions
of the senses. These conceptions, whose objective reality
is thus affirmed, are those of a species, likeness and unlikeness,
sameness and difference, &c.
The Theatætus is followed by the trilogy of the Sophist, the
Statesman, and the Philosopher, which completes the Megaric
group of dialogues. The first of these dialogues examines the
conception of appearance, that is of the not-being, the last (for
which the Parmenides may be taken) the conception of being.
Both dialogues are especially directed to the Eleatic doctrine.
After Plato had recognized the conception in its simple unity as
that which abides in the change of phenomena, his attention was
naturally turned towards the Eleatics, who in an opposite way had
attained the similar result that in unity consists all true substantiality,
and to multiplicity as such no true being belongs. In
order more easily on the one side to carry out this fundamental
thought of the Eleatic to its legitimate result, in which the
Megarians had already preceded him, he was obliged to give a
metaphysical substance to his abstract conceptions of species, i. e.
ideas. But on the other side, he could not agree with the inflexibility
and exclusiveness of the Eleatic unity, unless he would
wholly sacrifice the multiplicity of things; he was rather obliged
to attempt to show by a dialectic development of the Eleatic
principle that the one must be at the same time a totality, organically
connected, and embracing multiplicity in itself. This
double relation to the Eleatic principle is carried out by the
Sophist and the Parmenides; by the former polemically against the
Eleatic doctrine, in that it proves the being of the appearance or
the not-being, and by the latter pacifically, in that it analyzes the
Eleatic one by its own logical consequences into many. The inner
progress of the doctrine of Ideas in the Megaric group of dialogues
is therefore this, viz., that the Theatætus, in opposition to
the Heraclitico-Protagorean theory of the absolute becoming,
affirms the objective and independent reality of ideas, and the
Sophist shows their reciprocal relation and combining qualities,
while the Parmenides in fine exhibits their whole dialectic completeness
with their relation to the phenomenal world.
The Third Period begins with the return of the philosopher
to his native city. It unites the completeness of form belonging
to the first with the profounder characteristical content belonging
to the second. The memories of his youthful years seem at this
time to have risen anew before the soul of Plato, and to have imparted
again to his literary activity the long lost freshness and
fulness of that period, while at the same time his abode in foreign
lands, and especially his acquaintance with the Pythagorean philosophy,
had greatly enriched his mind with a store of images and
ideals. This reviving of old memories is seen in the fact that the
writings of this group return with fondness to the personality of
Socrates, and represent in a certain degree the whole philosophy
of Plato as the exaltation of the doctrine and the ideal embodiment
of the historical character of his early master. In opposition
to both of the first two periods, the third is marked externally
by an excess of the mythical form connected with the growing
influence of Pythagoreanism in this period, and internally by
the application of the doctrine of ideas to the concrete spheres
of psychology, ethics and natural science. That ideas possess
objective reality, and are the foundation of all essentiality and
truth, while the phenomena of the sensible world are only copies
of these, was a theory whose vindication was no longer attempted,
but which was presupposed as already proved, and as forming a
dialectical basis for the pursuit of the different branches of science.
With this was connected a tendency to unite the hitherto separate
branches of science into a systematic whole, as well as to mould
together the previous philosophical directions, and show the inner
application of the Socratic philosophy for ethics, of the Eleatic
for dialectics, and the Pythagorean for physics.
Upon this standpoint, the Phædrus, Plato’s inaugural to his
labors in the Academy, together with the Symposium, which is
closely connected with it, attempts to subject the rhetorical theory
and practice of their time to a thorough criticism, in order to show
in opposition to this theory and practice, that the fixedness and
stability of a true scientific principle could only be attained by
grounding every thing on the idea. On the same standpoint the
Phædon attempts to prove the immortality of the soul from the
doctrine of ideas; the Philebus to bring out the conception of
pleasure and of the highest good; the Republic to develop the
essence of the state, and the Timæus that of nature.
Having thus sketched the inner development of the Platonic
philosophy, we now turn to a systematic statement of its principles.
III.—Classification of the Platonic System.—The philosophy
of Plato, as left by himself, is without a systematic statement,
and has no comprehensive principle of classification. He
has given us only the history of his thinking, the statement of his
philosophical development; we are therefore limited in reference
to his classification of philosophy to simple intimations. Accordingly,
some have divided the Platonic system into theoretical and
practical science, and others into a philosophy of the good, the
beautiful and the true. Another classification, which has some
support in old records, is more correct. Some of the ancients say
that Plato was the first to unite in one whole the scattered philosophical
elements of the earlier sages, and so to obtain for philosophy
the three parts, logic, physics, and ethics. The more accurate
statement is given by Sextus Empiricus, that Plato has laid the
foundation for this threefold division of philosophy, but that it
was first expressly recognized and affirmed by his scholars, Xenocrates
and Aristotle. The Platonic system may, however, without
difficulty, be divided into these three parts. True, there are
many dialogues which mingle together in different proportions the
logical, the ethical, and the physical element, and though even
where Plato treats of some special discipline, the three are suffered
constantly to interpenetrate each other, still there are some
dialogues in which this fundamental scheme can be clearly recognized.
It cannot be mistaken that the Timæus has predominantly
a physical, and the Republic as decidedly an ethical element, and
if the dialectic is expressly represented in no separate dialogue,
yet does the whole Megaric group pursue the common end of
bringing out the conception of science and its true object, being,
and is, therefore, in its content decidedly dialectical. Plato must
have been led to this threefold division by even the earlier development
of philosophy, and though Xenocrates does not clearly
see it, yet since Aristotle presupposes it as universally admitted,
we need not scruple to make it the basis on which to represent
the Platonic system.
The order which these different parts should take, Plato himself
has not declared. Manifestly, however, dialectics should
have the first place as the ground of all philosophy, since Plato
uniformly directs that every philosophical investigation should
begin with accurately determining the idea (Phæd. p. 99. Phædr.
p. 237), while he subsequently examines all the concrete spheres
of science on the standpoint of the doctrine of ideas. The
relative position of the other two parts is not so clear. Since,
however, the physics culminates in the ethics, and the ethics,
on the other hand, has for its basis physical investigations into
the ensouling power in nature, we may assign to physics the
former place of the two.
The mathematical sciences Plato has expressly excluded from
philosophy. He considers them as helps to philosophical thinking
(Rep. VII. 526), as necessary steps of knowledge, without
which no one can come to philosophy (Ib. VI. 510); but
mathematics with him is not philosophy, for it assumes its principles
or axioms, without at all accounting for them, as though
they were manifest to all, a procedure which is not permitted to
pure science; it also serves itself for its demonstrations, with illustrative
figures, although it does not treat of these, but of that
which they represent to the understanding (Ib.). Plato thus
places mathematics midway between a correct opinion and science,
clearer than the one, but more obscure than the other. (Ib.
VII. 533.)
IV. The Platonic Dialectics. 1. Conception of Dialectics.—The
conception of dialectics or of logic, is used by the
ancients for the most part in a very wide sense, while Plato employs
it in repeated instances interchangeably with philosophy,
though on the other hand he treats it also as a separate branch
of philosophy. He divides it from physics as the science of the
eternal and unchangeable from the science of the changeable,
which never is, but is only ever becoming; he distinguishes also
between it and ethics, so far as the latter treats of the good not
absolutely, but in its concrete exhibition in morals and in the
state; so that dialectics may be termed philosophy in a higher
sense, while physics and ethics follow it as two less exact sciences,
or as a not yet perfected philosophy. Plato himself defines dialectics,
according to the ordinary signification of the word, as the
art of developing knowledge by way of dialogue in questions and
answers. (Rep. VII. 534). But since the art of communicating
correctly in dialogue is according to Plato, at the same time the
art of thinking correctly, and as thus thinking and speaking
could not be separated by the ancients, but every process of
thought was a living dialogue, so Plato would more accurately
define dialectics as the science which brings speech to a correct
issue, and which combines or separates the species, i. e. the conceptions
of things correctly with one another. (Soph. p. 253.
Phædr. p. 266). Dialectics with him has two divisions, to know
what can and what cannot be connected, and to know how division
or combination can be. But as with Plato these conceptions
of species or ideas are the only actual and true existence, so have
we, in entire conformity with this, a third definition of dialectics
(Philebus p. 57), as the science of being, the science of that
which is true and unchangeable, the science of all other sciences.
We may therefore briefly characterize it as the science of absolute
being or of ideas.
2. What Is Science? (1.) As opposed to sensation and the
sensuous representation.—The Theatætus is devoted to the discussion
of this question in opposition to the Protagorean sensualism.
That all knowledge consists in perception, and that the
two are one and the same thing, was the Protagorean proposition.
From this it followed, as Protagoras himself had inferred, that
things are, as they appear to me, that the perception or sensation
is infallible. But since perception and sensation are infinitely
diversified with different individuals, and even greatly vary in
the same individual, it follows farther, that there are no objective
determinations and predicates, that we can never affirm what a
thing is in itself, that all conceptions, great, small, light, heavy,
to increase, to diminish, &c., have only a relative significance,
and consequently, also, the conceptions of species, as combinations
of the changeful many, are wholly wanting in constancy and stability.
In opposition to this Protagorean thesis, Plato urges the
following objections and contradictions. First. The Protagorean
doctrine leads to the most startling consequences. If being
and appearance, knowledge and perception are one and the same
thing, then is the irrational brute, which is capable of perception,
as fully entitled to be called the measure of all things, as man,
and if the representation is infallible, as the expression of my
subjective character at a given time, then need there be no more
instruction, no more scientific conclusion, no more strife, and no
more refutation. Second. The Protagorean doctrine is a logical
contradiction; for according to it Protagoras must yield the
question to every one who disputes with him, since, as he himself
affirms, no one is incorrect, but every one judges only according
to truth; the pretended truth of Protagoras is therefore true for
no man, not even for himself. Third. Protagoras destroys the
knowledge of future events. That which I may regard as profitable
may not therefore certainly prove itself as such in the result.
To determine that which is really profitable implies a calculation
of the future, but since the ability of men to form such a calculation
is very diverse, it follows from this that not man as such,
but only the wise man can be the measure of things. Fourth.
The theory of Protagoras destroys perception. Perception, according
to him, rests upon a distinction of the perceived object
and the perceiving subject, and is the common product of the
two. But in his view the objects are in such an uninterrupted
flow, that they can neither become fixed in seeing nor in hearing.
This condition of constant change renders all knowledge from
sense, and hence (the identity of the two being assumed), all
knowledge impossible. Fifth. Protagoras overlooks the apriori
element in knowledge. It is seen in an analysis of the sense-perception
itself, that all knowledge cannot be traced to the
activity of the senses, but that there must also be presupposed
besides these, intellectual functions, and hence an independent
province of supersensible knowledge. We see with the eyes, and
hear with the ears, but to group together the perceptions attained
through these different organs, and to hold them fast in the unity
of self-consciousness, is beyond the power of the activity of the
senses. Again, we compare the different sense-perceptions with
one another, a function which cannot belong to the senses, since
each sense can only furnish its own distinctive perception. Still
farther, we bring forward determinations respecting the perceptions
which we manifestly cannot owe to the senses, in that we
predicate of these perceptions, being and not-being, likeness and
unlikeness, &c. These determinations, to which also belong the
beautiful and the odious, good and evil, constitute a peculiar province
of knowledge, which the soul, independently of every sense-perception,
brings forward through its own independent activity.
The ethical element of this Plato exhibits in his attack upon
sensualism, and also in other dialogues. He maintains (in the
Sophist), that men holding such opinions must be improved before
they can be instructed, and that when made morally better,
they will readily recognize the truth of the soul and its moral
and rational capacities, and affirm that these are real things,
though objects of neither sight nor of feeling.
(2.) The Relation of Knowing to Opinion.—Opinion is just as
little identical with knowing as is the sense-perception. An incorrect
opinion is certainly different from knowing, and a correct
one is not the same, for it can be engendered by the art of speech
without therefore attaining the validity of true knowledge. The
correct opinion, so far as it is true in matter though imperfect in
form, stands rather midway between knowing and not-knowing,
and participates in both.
(3.) The Relation of Science to Thinking.—In opposition to
the Protagorean sensualism, we have already referred to an energy
of the soul independent of the sensuous perception and sensation,
competent in itself to examine the universal, and grasp true being
in thought. There is, therefore, a double source of knowledge,
sensation and rational thinking. Sensation refers to that which
is conceived in the constant becoming and perpetual change, to
the pure momentary, which is in an incessant transition from the
was, through the now, into the shall be (Parm. p. 152); it is,
therefore, the source of dim, impure, and uncertain knowledge;
thinking on the other hand refers to the abiding, which neither
becomes nor departs, but remains ever the same. (Tim. p. 51.)
Existence, says the Timæus (p. 27) is of two kinds, “that which
ever is but has no becoming, and that which ever becomes but
never is. The one kind, which is always in the same state, is
comprehended through reflection by the reason, the other, which
becomes and departs, but never properly is, may be apprehended
by the sensuous perception without the reason.” True science,
therefore, flows alone from that pure and thoroughly internal activity
of the soul which is free from all corporeal qualities and
every sensuous disturbance. (Phæd. p. 65.) In this state the soul
looks upon things purely as they are (Phæd. p. 66) in their eternal
being and their unchangeable condition. Hence the true
state of the philosopher is announced in the Phædon (p. 64) to
be a willingness to die, a longing to fly from the body, as from a
hinderance to true knowledge, and become pure spirit. According
to all this, science is the thinking of true being or of ideas;
the means to discover and to know these ideas, or the organ for
their apprehension is the dialectic, as the art of separating and combining
conceptions; the true objects of dialectics are ideas.
3. The Doctrine of Ideas in its Genesis.—The Platonic
doctrine of ideas is the common product of the Socratic method
of forming conceptions, the Heraclitic doctrine of absolute becoming,
and the Eleatic doctrine of absolute being. To the first of
these Plato owes the idea of a knowing through conceptions, to
the second the recognition of the becoming in the field of the
sensuous, to the third the position of a field of absolute reality.
Elsewhere (in the Philebus) Plato connects the doctrine of ideas
with the Pythagorean thought that every thing may be formed
from unity and multiplicity, from the limit and the unlimited.
The aim of the Theatætus, the Sophist, and the Parmenides is to
refute the principles of the Eleatics and Heraclitics: this refutation
is effected in the Theatætus by combating directly the principle
of an absolute becoming, in the Sophist by combating
directly the principle of abstract being, and in the Parmenides by
taking up the Eleatic one and showing its true relations. We
have already spoken of the Theatætus; we will now look for the
development of the doctrine of ideas in the Sophist and Parmenides.
The ostensible end of the former of these dialogues is to show
that the Sophist is really but a caricature of the philosopher, but
its true end is to fix the reality of the appearance, i. e. of the not-being,
and to discuss speculatively the relation of being and not-being.
The doctrine of the Eleatics ended with the rejection of
all sensuous knowledge, declaring that what we receive as the
perception of a multiplicity of things or of a becoming is only an
appearance. In this the contradiction was clear, the not-being
was absolutely denied, and yet its existence was admitted in the
notion of men. Plato at once draws attention to this contradiction,
showing that a delusive opinion, which gives rise to a false
image or representation, is not possible, since the whole theory
rests upon the assumption that the false, the not-true, i. e. not-being
cannot even be thought. This, Plato continues, is the great
difficulty in thinking of not-being, that both he who denies and
he who affirms its reality is driven to contradict himself. For
though it is inexpressible and inconceivable either as one or as
many, still, when speaking of it, we must attribute to it both being
and multiplicity. If we admit that there is such a thing as a
false opinion, we assume in this very fact the notion of not-being,
for only that opinion can be said to be false which supposes either
the not-being to be, or makes that, which is not, to be. In short,
if there actually exists a false notion, so does there actually and
truly exist a not-being. After Plato had thus fixed the reality of
not-being, he discusses the relation of being and not-being, i. e.
the relation of conceptions generally in their combinations and
differences. If not-being has no less reality than being, and being
no more than not-being, if, therefore, e. g. the not-great is as truly
real as the great, then every conception may be apprehended according
to its opposite sides as being and not-being at the same
time: it is a being in reference to itself, as something identical
with itself, but it is not-being in reference to every one of the
numberless other conceptions which can be referred to it, and
with which, on account of its difference from them, it can have
nothing in common. The conception of the same ταὐτὸν and the
different θάτερον represent the general form of an antithesis.
These are the universal formulæ of combination for all conceptions.
This reciprocal relation of conceptions as at the same time
being and not-being, by virtue of which they can be arranged
among themselves, forms now the basis for the art of dialectics,
which has to judge what conceptions can and what cannot be
joined together. Plato illustrates here by taking the conceptions
of being, motion (becoming), and rest (existence), and showing
what are the results of the combinations of these ideas. The
conceptions of motion and rest cannot well be joined together,
though both of them may be joined with that of being, since both
are; the conception of rest is therefore in reference to itself a
being, but in reference to the conception of motion a not-being or
different. Thus the Platonic doctrine of ideas, after having in
the Theatætus attained its general foundation in fixing the objective
reality of conceptions, becomes now still farther developed in
the Sophist to a doctrine of the agreement and disagreement of
conceptions. The category which conditions these reciprocal relations
is that of not-being or difference. This fundamental
thought of the Sophist, that being is not without not-being and
not-being is not without being, may be expressed in modern phraseology
thus: negation is not not-being but determinateness, and
on the other hand all determinateness and concreteness of conceptions,
or every thing affirmative can be only through negation;
in other words the conception of contradiction is the soul of a
philosophical method.
The doctrine of ideas appears in the Parmenides as the positive
consequence and progressive development of the Eleatic principle.
Indeed in this dialogue, in that Plato makes Parmenides the
chief speaker, he seems willing to allow that his doctrine is in
substance that of the Eleatic sage. True, the fundamental
thought of the dialogue—that the one is not conceivable in its
complete singleness without the many, nor the many without the
one, that each necessarily presupposes and reciprocally conditions
the other—stands in the most direct contradiction to Eleaticism.
Yet Parmenides himself, by dividing his poem into two parts, and
treating in the first of the one and in the second of the many,
postulates an inner mediation between these two externally so disjointed
parts of his philosophy, and in this respect the Platonic
theory of ideas might give itself out as the farther elimination,
and the true sense of the Parmenidean philosophizing. This dialectical
mediation between the one and the not-one or the many
Plato now attempts in four antinomies, which have ostensibly only
a negative result in so far as they show that contradictions arise
both whether the one be adopted or rejected. The positive sense
of these antinomies, though it can be gained only through inferences
which Plato himself does not expressly utter, but leaves to
be drawn by the reader—is as follows. The first antinomy shows
that the one is inconceivable as such since it is only apprehended
in its abstract opposition to the many; the second, that in this
case also the reality of the many is inconceivable; the third, that
the one or the idea cannot be conceived as not-being, since there
can be neither conception nor predicate of the absolute not-being,
and since, if not-being is excluded from all fellowship with being,
all becoming and departing, all similarity and difference, every
representation and explanation concerning it must also be denied;
and lastly, the fourth affirms that the not-one or the many cannot
be conceived without the one or the idea. What now is Plato’s
aim in this discussion of the dialectic relations between the conceptions
of the one and the many? Would he use the conception
of the one only as an example to explain his dialectic method
with conceptions, or is the discussion of this conception itself the
very object before him? Manifestly the latter, or the dialogue
ends without result and without any inner connection of its two
parts. But how came Plato to make such a special investigation
of this conception of the one? If we bear in mind that the
Eleatics had already perceived the antithesis of the actual and
the phenomenal world in the antithesis of the one and the many,
and that Plato himself had also regarded his ideas as the unity
of the manifold, as the one and the same in the many—since he
repeatedly uses “idea” and “the one” in the same sense, and
places (Rep. VII. 537) dialectics in the same rank with the
faculty of bringing many to unity—then is it clear that the one
which is made an object of investigation in the Parmenides is the
idea in its general sense, i. e. in its logical form, and that Plato
consequently in the dialectic of the one and the many would represent
the dialectic of the idea and the phenomenal world, or in other
words would dialectically determine and establish the correct view
of the idea as the unity in the manifoldness of the phenomenal.
In that it is shown in the Parmenides, on the one side, that the
many cannot be conceived without the one, and on the other side,
that the one must be something which embraces in itself manifoldness,
so have we the ready inference on the one side, that the
phenomenal world, or the many, has a true being only in so far
as it has the one or the conception within it, and on the other
side, that since the conception is not an abstract one but manifoldness
in unity, it must actually have manifoldness in unity in
order to be able to be in the phenomenal world. The indirect
result of the Parmenides is that matter as the infinitely divisible
and undetermined mass has no actuality, but is in relation to the
ideal world a not-being, and though the ideas as the true being
gain their appearance in it, yet the idea itself is all that is actual
in the appearance or phenomenon; the phenomenal world derives
its whole existence from the ideal world which appears in it, and
has a being only so far as it has a conception or idea for its content.
4. Positive Exposition of the Doctrine of Ideas.—Ideas
may be defined according to the different sides of their historical
connection, as the common in the manifold, the universal in the
particular, the one in the many, or the constant and abiding in the
changing. Subjectively they are principles of knowing which
cannot be derived from experience they are the intuitively certain
and innate regulators of our knowledge. Objectively they
are the immutable principles of being and of the phenomenal
world, incorporeal and simple unities which have no relation to
space, and which may be predicated of every independent thing.
The doctrine of ideas grew originally out of the desire to give a
definite conception to the inner essence of things, and make the
real world conceivable as a harmoniously connected intellectual
world. This desire of scientific knowledge Aristotle cites expressly
as the motive to the Platonic doctrine of ideas. “Plato,”
he says (Metaph. XIII. 4), “came to the doctrine of ideas because
he was convinced of the truth of the Heraclitic view which
regarded the sensible world as a ceaseless flowing and changing.
His conclusion from this was, that if there be a science of any
thing there must be, besides the sensible, other substances which
have a permanence, for there can be no science of the fleeting.”
It is, therefore, the idea of science which demands the reality of
ideas, a demand which cannot be granted unless an idea or conception
is also the ground of all being. This is the case with
Plato. According to him there can be neither a true knowing
nor a true being without ideas and conceptions which have an
independent reality.
What now does Plato mean by idea? From what has already
been said it is clear that he means something more than ideal conceptions
of the beautiful and the good. An idea is found, as the
name itself (εἰδος) indicates, wherever a universal conception of a
species or kind is found. Hence Plato speaks of the idea of a
bed, table, strength, health, voice, color, ideas of simple relations
and properties, ideas of mathematical figures, and even ideas of
not-being, and of that, which in its essence only contradicts the
idea, baseness and vice. In a word, we may put an idea wherever
many things may be characterized by a common name (Rep. X.
596): or as Aristotle expresses it (Met. XII. 3). Plato places
an idea to every class of being. In this sense Plato himself
speaks in the beginning of the Parmenides. Parmenides asks the
young Socrates what he calls ideas. Socrates answers by naming
unconditionally the moral ideas, the ideas of the true, the beautiful,
the good, and then after a little delay he mentions some physical
ones, as the ideas of man, of fire, of water; he will not allow
ideas to be predicated of that which is only a formless mass, or
which is a part of something else, as hair, mud and clay, but in
this he is answered by Parmenides, that if he would be fully imbued
with philosophy, he must not consider such things as these
to be wholly despicable, but should look upon them as truly
though remotely participating in the idea. Here at least the
claim is asserted that no province of being is excluded from the
idea, that even that which appears most accidental and irrational
is yet a part of rational knowledge, in fact that every thing existing
may be brought within a rational conception.
5. The Relation of Ideas to the Phenomenal World.
Analogous to the different definitions of idea are the different
names which Plato gives to the sensible and phenomenal world.
He calls it the many, the divisible, the unbounded, the undetermined
and measureless, the becoming, the relative, great and small,
not-being. The relation now in which these two worlds of sense
and of ideas stand to each other is a question which Plato has
answered neither fully nor consistently with himself. His most
common way is to characterize the relation of things to conceptions
as a participant, or to call things the copies and adumbrations,
while ideas are the archetypes. Yet this is so indefinite
that Aristotle properly says that to talk in this way is only to
use poetical metaphors. The great difficulty of the doctrine of
ideas is not solved but only increased by these figurative representations.
The difficulty lies in the contradiction which grows
out of the fact that while Plato admits the reality of the becoming
and of the province of the becoming, he still affirms that ideas
which are substances ever at rest and ever the same are the only
actual. Now in this Plato is formally consistent with himself,
while he characterizes the matériel of matter not as a positive
substratum but as not-being, and guards himself with the express
affirmation that he does not consider the sensible as being, but
only as something similar to being. (Rep. X. 597.) The position
laid down in the Parmenides is also consistent with this, that a
perfect philosophy should look upon the idea as the cognizable in
the phenomenal world, and should follow it out in the smallest
particulars until every part of being should be known and all
dualism removed. In fine, Plato in many of his expressions
seems to regard the world of sensation only as a subjective appearance,
as a product of the subjective notion, as the result of a
confused way of representing ideas. In this sense the phenomena
are entirely dependent on ideas; they are nothing but the ideas
themselves in the form of not being; the phenomenal world derives
its whole existence from the ideal world which appears in it.
But yet when Plato calls the sensible a mingling of the same
with the different or the not-being (Tim. p. 35), when he characterizes
the ideas as vowels which go through every thing like a
chain (Soph. p. 253), when he himself conceives the possibility
that matter might offer opposition to the formative energy of
ideas (Tim. p. 56), when he speaks of an evil soul of the world
(de Leg. X. 896), and gives intimations of the presence in the
world of a principle in nature hostile to God (Polit. p. 268),
when he in the Phædon treats of the relation between body and
soul as one wholly discordant and malignant,—in all this there
is evidence enough, even after allowing for the mythical form of
the Timæus, and the rhetorical composition which prevails in the
Phædon, to substantiate the contradiction mentioned above.
This is most clear in the Timæus. Plato in this dialogue makes
the sensible world to be formed by a Creator after the pattern of
an idea, but in this he lays down as a condition that this Demi-urge
or Creator should find at hand a something which should be
apt to receive and exhibit this ideal image. This something
Plato compares to the matter which is fashioned by the artisan
(whence the later name hyle). He characterizes it as wholly undetermined
and formless, but possessing in itself an aptitude for
every variety of forms, an invisible and shapeless thing, a something
which it is difficult to characterize, and which Plato even
does not seem inclined very closely to describe. In this the
actuality of matter is denied; while Plato makes it equivalent to
space it is only the place, the negative condition of the sensible
while it possesses a being only as it receives in itself the ideal
form. Still matter remains the objective and phenomenal form
of the idea: the visible world arises only through the mingling
of ideas with this substratum, and if matter be metaphysically
expressed as “the different,” then does it follow with logical necessity
in a dialectical discussion that it is just as truly being as
not-being. Plato does not conceal from himself this difficulty,
and therefore attempts to represent with comparisons and images
this presupposition of a hyle which he finds it as impossible to do
without as to express in a conceivable form. If he would do
without it he must rise to the conception of an absolute creation,
or consider matter as an ultimate emanation from the absolute
spirit, or else explain it as appearance only. Thus the Platonic
system is only a fruitless struggle against dualism.
6. The Idea of the Good and the Deity. If the true and
the real is exhibited in general conceptions which are so related
to each other that every higher conception embraces and combines
under it several lower, so that any one starting from a single idea
may eventually discover all (Meno. p. 81), then must the sum of
ideas form a connected organism and succession in which the
lower idea appears as a stepping-stone and presupposition to a
higher. This succession must have its end in an idea which needs
no higher idea or presupposition to sustain it. This highest idea,
the ultimate limit of all knowledge, and itself the independent
ground of all other ideas, Plato calls the idea of the good, i. e.
not of the moral but of the metaphysical good. (Rep. VII. 517.)
What this good is in itself, Plato undertakes to show only in
images. “In the same manner as the sun,” he says in the Republic
(VI. 506), “is the cause of sight, and the cause not merely that
objects are visible but also that they grow and are produced, so
the good is of such power and beauty, that it is not merely the
cause of science to the soul, but is also the cause of being and
reality to whatever is the object of science, and as the sun is not
itself sight or the object of sight but presides over both, so the
good is not science and truth but is superior to both, they being
not the good itself but of a goodly nature.” The good has unconditioned
worth, and gives to every other thing all the value it
possesses. The idea of the good excludes all presupposition. It
is the ultimate ground at the same time of knowing and of being,
of the perceiver and the perceived, of the subjective and the objective,
of the ideal and the real, though exalted itself above such
a division. (Rep. VI. 508-517.) Plato, however, has not attempted
a derivation of the remaining ideas from the idea of the good;
his course here is wholly an empirical one; a certain class of
objects are taken, and having referred these to their common
essence this is given out as their idea. He has treated the individual
conceptions so independently, and has made each one so
complete in itself, that it is impossible to find a proper division or
establish an immanent continuation of one into another.
It is difficult to say precisely what relation this idea of the
good bore to the Deity in the Platonic view. Taking every thing
together it seems clear that Plato regarded the two as identical,
but whether he conceived this highest cause to be a personal being
or not is a question which hardly admits of a definite answer.
The logical result of his system would exclude the personality of
God. If only the universal (the idea) is the true being, then can
the only absolute idea, the Deity, be only the absolute universal;
but that Plato was himself conscious of this logical conclusion we
can hardly affirm, any more than we can say on the other hand that
he was clearly a theist. For whenever in a mythical or popular
statement he speaks of innumerable gods, this only indicates that
he is speaking in the language of the popular religion, and when
he speaks in an accurate philosophical sense, he only makes the
relation of the personal deity with the idea a very uncertain one.
Most probable, therefore, is it that this whole question concerning
the personality of God was not yet definitely before him, that he
took up the religious idea of God and defended it in ethical
interest against the anthropomorphism of the mythic poets, that
he sought to establish it by arguments drawn from the evidences
of design in nature, and the universal prevalence of a belief in a
God, while as a philosopher he made no use of it.
V. The Platonic Physics. 1. Nature.—The connection
between the Physics and the Dialectics of Plato lies principally
in two points—the conception of becoming, which forms the chief
property of nature, and that of real being, which is at once the all
sufficient and good, and the true end of all becoming. Because
nature belongs to the province of irrational sensation we cannot
look for the same accuracy in the treatment of it, as is furnished
in dialectics. Plato therefore applied himself with much less zest
to physical investigations than to those of an ethical or dialectical
character, and indeed only attended to them in his later years.
Only in one dialogue, the Timæus, do we find any extended evolution
of physical doctrines, and even here Plato seems to have
gone to his work with much less independence than his wont, this
dialogue being more strongly tinctured with Pythagoreanism than
any other of his writings. The difficulty of the Timæus is increased
by the mythical form on which the old commentators
themselves have stumbled. If we take the first impression that
it gives us, we have, before the creation of the world, a Creator as
a moving and a reflecting principle, with on the one side the ideal
world existing immovable as the eternal archetype, and on the
other side, a chaotic, formless, irregular, fluctuating mass, which
holds in itself the germ of the material world, but has no determined
character nor substance. With these two elements the
Creator now blends the world-soul which he distributes according
to the relation of numbers, and sets it in definite and harmonious
motion. In this way the material world, which has become actual
through the arrangement of the chaotic mass into the four elements,
finds its external frame, and the process thus begun is
completed in its external structure by the formation of the organic
world.
It is difficult to separate the mythical and the philosophical
elements in this cosmogony of the Timæus, especially difficult to
determine how far the historical construction, which gives a succession
in time to the acts of creation, is only a formal one, and
also how far the affirmation that matter is absolutely a not-being
can be harmonized with the general tenor of Plato’s statements.
The significance of the world-soul is clearer. Since the soul in
the Platonic system is the mean between spirit and body, and as
in the same way mathematical relations, in their most universal
expression as numbers, are the mean between mere sensuous existence
and the pure idea (between the one and the many as Plato
expresses it), it would seem clear that the world-soul, construed
according to the relation of numbers, must express the relation of
the world of ideas to that of sense, in other words, that it denotes
the sensible world as a thought represented in the form of material
existence. The Platonic view of nature, in opposition to the
mechanical attempts to explain it of the earlier philosophers, is
entirely teleological, and based upon the conception of the good,
or, on the moral idea. Plato conceives the world as the image of
the good, as the work of the divine munificence. As it is the
image of the perfect it is therefore only one, corresponding to the
idea of the single all-embracing substance, for an infinite number
of worlds is not to be conceived as actual. For the same reason
the world is spherical, after the most perfect and uniform structure,
which embraces in itself all other forms; its movement is in
a circle, because this, by returning into itself, is most like the
movement of reason. The particular points of the Timæus, the
derivation of the four elements, the separation of the seven planets
according to the musical scale, the opinion that the stars were immortal
and heavenly substances, the affirmation that the earth
holds an abiding position in the middle of the world, a view which
subsequently became elaborated to the Ptolemaic system, the reference
of all material figures to the triangle as the simplest plane
figure, the division of inanimate nature, according to the four elements,
into creatures of earth, water, and air, his discussions respecting
organic nature, and especially respecting the construction
of the human body—all these we need here only mention. Their
philosophical worth consists not so much in their material content,
but rather in their fundamental idea, that the world should be
conceived as the image and the work of reason, as an organism
of order, harmony, and beauty, as the good actualizing itself.
2. The Soul.—The doctrine of the soul, considering it simply
as the basis of a moral action, and leaving out of view all questions
of concrete ethics, forms a constituent element in the Platonic
physics. Since the soul is united to the body, it participates
in the motions and changes of the body, and is, in this respect,
related to the perishable. But in so far as it participates in the
knowledge of the eternal, i. e. in so far as it knows ideas, does
there live within it a divine principle—reason. Accordingly,
Plato distinguishes two components of the soul—the divine and the
mortal, the rational and the irrational. These two are united by
an intermediate link, which Plato calls θυμὸς or spirit, and which,
though allied to reason is not reason itself, since it is often exhibited
in children and also in brutes, and since even men are often carried
away by it without reflection. This threefoldness, here exhibited
psychologically, is found, in different applications, through all the
last general period of Plato’s literary life. Based upon the anthropological
triplicate of reason, soul and body, it corresponds also to
the division of theoretical knowledge into science (or thinking),
correct opinions (or sense-perception), and ignorance, to the triple
ladder of eroticism in the Symposium and the mythological representation
connected with this of Poros, Eros, and Penia; to the
metaphysical triplicate of the ideal world, mathematical relations
and the sensible world; and furnishes ground for deriving the
ethical division of virtue and the political division of ranks.
So far as the soul is a mean between the spiritual and corporeal,
may we connect the Phædon’s proofs of its immortality
with the psychological view now before us. The common thought
of these arguments is that the soul, in its capacity for thinking,
participates in the reason, and being thus of an opposite nature to,
and uncontrolled by the corporeal, it may have an independent
existence. The arguments are wholly analytical, and possess no
valid and universal proof; they proceed entirely upon a petitio
principii, they are derived partly from mythical philosophemes,
and manifest not only an obscure conception of the soul, but of its
relations to the body and the reason, and, so far as the relation of
the soul to the ideal world is in view, they furnish in the best case
only some proof for the immortality of him who has raised his
soul to a pure spirit, i. e. the immortality of the philosopher. Plato
was not himself deceived as to the theoretical insufficiency of his
arguments. Their number would show this, and, besides, he expressly
calls them proofs which amount to only human probability,
and furnish practical postulates alone. With this view he introduces
at the close of his arguments the myth of the lower world,
and the state of departed souls, in order, by complying with the
religious notions, and traditions of his countrymen, to gain a positive
support for belief in the soul’s immortality. Elsewhere
Plato also speaks of the lower world, and of the future rewards
and punishments of the good and the evil, in accordance with the
popular notions, as though he saw the elements of a divine revelation
therein; he tells of purifying punishment in Hades, analogous
to a purgatory; he avails himself of the common notion to
affirm that shades still subject to the corporeal principle will
hover after death over their graves, seeking to recover their lifeless
bodies, and at times he dilates upon the migration of the soul
to various human and brute forms. On the whole, we find in
Plato’s proofs of immortality, as in his psychology generally, that
dualism, which here expresses itself as hatred to the corporeal,
and is connected with the tendency to seek the ultimate ground
of evil in the nature of the “different” and the sensible world.
VI. The Platonic Ethics.—The ground idea of the good,
which in physics served only as an inventive conception, finds
now, in the ethics, its true exhibition. Plato has developed it
prominently according to three sides, as good, as individual virtue,
and as ethical world in the state. The conception of duty remains
in the background with him as with the older philosophers.
1. Good and Pleasure.—That the highest good can be nothing
other than the idea of the good itself, has already been shown
in the dialectics, where this idea was suffered to appear as the ultimate
end of all our striving. But since the dialectics represent
the supreme good as unattainable by human reason, and only cognizable
in its different modes of manifestation, we can, therefore,
only follow these different manifestations of the highest good,
which represent not the good itself, but the good in becoming,
where it appears as science, truth, beauty, virtue, &c. We are
thus not required to be equal to God, but only like him (Theæt.)
It is this point of view which lies at the basis of the graduated
table of good, given in the Philebus.
In seeking the highest good, the conception of pleasure must
be investigated. The Platonic standpoint here is the attempt to
strike a balance between Hedonism, (the Cyrenian theory that
pleasure is the highest good, cf. § XIII. 3), and Cynicism. While
he will not admit with Aristippus that pleasure is the true good,
neither will he find it as the Cynics maintain, simply in the negation
of its contrary, pain, and thus deny that it belongs to the
good things of human life. He finds his refutation of Hedonism
in the indeterminateness and relativity of all pleasure, since that
which at one time may seem as pleasure, under other circumstances
may appear as pain; and since he who chooses pleasure
without distinction, will find impure pleasures always combined
in his life with more or less of pain; his refutation of Cynicism
he establishes by showing the necessary connection between virtue
and true pleasure, showing that there is a true and enduring pleasure,
the pleasure of reason, found in the possession of truth and
of goodness, while a rational condition separate from all pleasure,
cannot be the highest good of a finite being. It is most prominently
by this distinction of a true and false, of a pure and impure
pleasure, that Plato adjusts the controversy of the two
Socratic schools.—A detailed exhibition of the Philebus we must
here omit.—On the whole, in the Platonic apprehension of pleasure,
we cannot but notice that same vacillation with which Plato
every where treats of the relation between the corporeal and the
spiritual, at one time considering the former as a hindrance to the
latter, and at another as its serving instrument; now, regarding it
as a concurring cause to the good, and then, as the ground of all
evil; here, as something purely negative, and there, as a positive
substratum which supports all the higher intellectual developments;
and in conformity with this, pleasure is also considered at
one time as something equivalent to a moral act, and to knowledge,
and at another as the means and accidental consequence of
the good.
2. Virtue.—In his theory of virtue, Plato is wholly Socratic.
He holds fast to the opinion that it is science (Protagoras), and
therefore, teachable (Meno), and as to its unity, it follows from
the dialectical principle that the one can be manifold, or the manifold
one, that, therefore, virtue must both be regarded as one,
and also in a different respect, as many. Plato thus brings out
prominently the union and connection of all virtues, and is fond
of painting, especially in the introductory dialogues, some single
virtue as comprising in itself the sum of all the rest. Plato follows
for the most part the fourfold division of virtues, as popularly
made; and first, in the Republic (IV. 441), he attempts a
scientific derivation of them, by referring to each of the three
parts of the soul its appropriate virtue. The virtue of the reason
he calls prudence or wisdom, the directing or measuring virtue,
without whose activity valor would sink to brute impulse, and
calm endurance to stupid indifference; the virtue of spirit is
valor, the help-meet of reason, or spirit ( θυμὸς) penetrated by
science, which in the struggle against pleasure and pain, desire
and fear, preserves the rational intelligence against the alarms
with which sensuous desires, would seek to sway the soul; the
virtue of the sensuous desires, and which has to reduce these
within true and proper grounds, is temperance, and that virtue in
fine to which belong the due regulation and mutual adjustment of
the several powers of the soul, and which, therefore, constitutes
the bond and the unity of the three other virtues, is justice.
In this last conception, that of justice, all the elements of
moral culture meet together and centre, exhibiting the moral life
of the individual as a perfect whole, and then, by requiring an
application of the same principle to communities, the moral consideration
is advanced beyond the narrow circle of individual
life. Thus is established the whole of the moral world—Justice
“in great letters,” the moral life in its complete totality, is the
state. In this is first actualized the demand for the complete
harmony of the human life. In and through the state comes the
complete formation of matter for the reason.
3. The State.—The Platonic state is generally regarded as
an ideal or chimera, which it is impracticable to realize among
men. This view of the case has even been ascribed to Plato, and
it has been said that in his Republic he attempted to sketch only
a fine ideal of a state constitution, while in the Laws he traced
out a practicable philosophy of the state from the standpoint of
the common consciousness. But in the first place, this was not
Plato’s true meaning. Although he acknowledges that the state
he describes cannot be found on earth, and has its archetype only
in heaven, by which the philosopher ought to form himself (IX.
592), still he demands that efforts should be made to realize it
here, and he even attempts to show the conditions and means under
which such a state could be made actual, not overlooking in
all this the defects arising from the different characters and temperaments
of men. A composition, dissociated from the idea,
could only appear untrue to a philosopher like Plato, who saw
the actual and the true only in the idea; and the common view
which supposes that he wrote his Republic in the full consciousness
of its impracticability, mistakes entirely the standpoint of
the Platonic philosophy. Still farther the question whether such
a state as the Platonic is attainable and the best, is generally perverted.
The Platonic state is the Grecian state-idea given in a
narrative form. It is no vain and powerless ideal to picture the
idea as a rational principle in every moment of the world’s history,
since the idea itself is that which is absolutely actual, that which
is essential and necessary in existing things. The truly ideal
ought not to be actual, but is actual, and the only actual; if an
idea were too good for existence, or the empirical actuality too
bad for it, then were this a fault of the ideal itself. Plato has
not given himself up merely to abstract theories, the philosopher
cannot leap beyond his age, but can only see and grasp it in its
true content. This Plato has done. His standpoint is his own
age. He looks upon the political life of the Greeks as then existing,
and it is this life, exalted to its idea, which forms the real
content of the Platonic Republic. Plato has here represented
the Grecian morality in its substantial condition, If the Platonic
Republic seems prominently an ideal which can never be realized,
this is owing much less to its ideality than to the defects of
the old political life. The most prominent characteristic of the
Hellenic conception of the state, before the Greeks began to fall
into unbridled licentiousness, was the constraint thrown upon
personal subjective freedom, in the sacrifice of every individual
interest to the absolute sovereignty of the state. With Plato
also, the state is every thing. His political institutions, so loudly
ridiculed by the ancients, are only the undeniable consequences
following from the very idea of the Grecian state, which allowed
neither to the individual citizen nor to a corporation, any lawful
sphere of action independent of itself.
The grand feature of the Platonic state is, as has been said,
the exclusive sacrifice of the individual to the state, the reference
of moral to political virtue. Since man cannot reach his complete
development in isolation, but only as a member of an organic society
(the state), Plato therefore concludes that the individual purpose
should wholly conform to the general aim, and that the state
must represent a perfect and harmonious unity, and be a counterpart
of the moral life of the individual. In a perfect state all things,
joy and sorrow, and even eyes, ears and hands, must be common
to all, so that the social life would be as it were the life of one
man. This perfect universality and unity, can only be actualized
when every thing individual and particular falls away, and hence
the difficulty of the Platonic Republic. Private property and
domestic life (in place of which comes a community of goods and
of wives), the duty of education, the choice of rank and profession,
the arts and sciences, all these must be subjected and placed under
the exclusive and absolute control of the state. The individual
may lay claim only to that happiness which belongs to him as
a constituent element of the state. From this point Plato goes
down into the minutest particulars, and gives the closest directions
respecting gymnastics and music, which form the two means of
culture of the higher ranks; respecting the study of mathematics,
and philosophy, the choice of stringed instruments, and the proper
measure of verse; respecting bodily exercise and the service of
women in war; respecting marriage settlements, and the age at
which any one should study dialectics, marry, and beget children.
The state with him is only a great educational establishment, a
family in the mass.—Lyric poetry he would allow only under the
inspection of competent judges. Epic and dramatic poetry, even
Homer and Hesiod, should be banished from the state, since they
rouse and lead astray the passions, and give unworthy representations
of the gods. Exhibitions of physical degeneracy or weakness
should not be tolerated in the Platonic state; deformed and
sickly infants should be abandoned, and food and attention should
be denied to the sick.—In all this we find the chief antithesis of
the ancient to the modern state. Plato did not recognize the will
and choice of the individual, and yet the individual has a right to
demand this. The problem of the modern state has been to unite
these two sides, to bring the universal end and the particular end
of the individual into harmony, to reconcile the highest possible
freedom of the conscious individual will, with the highest possible
supremacy of the state.
The political institutions of the Platonic state are decidedly
aristocratic. Grown up in opposition to the extravagances of the
Athenian democracy, Plato prefers an absolute monarchy to every
other constitution, though this should have as its absolute ruler
only the perfect philosopher. It is a well-known expression of his,
that the state can only attain its end when philosophers become
its rulers, or when its present rulers have carried their studies so
far and so accurately, that they can unite philosophy with a superintendence
of public affairs (V. 473). His reason for claiming
that the sovereign power should be vested only in one, is the fact
that very few are endowed with political wisdom. This ideal of
an absolute ruler who should be able to lead the state perfectly,
Plato abandons in the Laws, in which work he shows his preference
for a mixed constitution, embracing both a monarchical and
an aristocratic element. From the aristocratic tendency of the
Platonic ideal of a state, follows farther the sharp division of
ranks, and the total exclusion of the third rank from a proper
political life. In reality Plato makes but two classes in his state,
the subjects and the sovereign, analogous to his twofold psychological
division of sensible and intellectual, mortal and immortal,
but as in psychology he had introduced a middle step, spirit, to
stand between his two divisions there, so in the state he brings in
the military class between the ruler and those intended to supply
the bodily wants of the community. We have thus three ranks,
that of the ruler, corresponding to the reason, that of the watcher
or warrior, answering to spirit, and that of the craftsman, which
is made parallel to the appetites or sensuous desires. To these
three ranks belong three separate functions: to the first, that of
making the law and caring for the general good; to the second,
that of defending the public welfare from attacks of external foes;
and to the third, the care of separate interests and wants, as agriculture,
mechanics, &c. From each of these three ranks and its
functions the state derives a peculiar virtue—wisdom from the
ruler, bravery from the warrior, and temperance from the craftsman,
so far as he lives in obedience to his rulers. In the proper
union of these three virtues is found the justice of the state, a
virtue which is thus the sum of all other virtues. Plato pays
little attention to the lowest rank, that of the craftsman, who exists
in the state only as means. He held that it was not necessary to
give laws and care for the rights of this portion of the community.
The separation between the ruler and the warrior is not so broad.
Plato suffers these two ranks to interpenetrate each other, and
analogous to his original psychological division, as though the
reason were but spirit in the highest step of its development, he
makes the oldest and the best of the warriors rise to the dignity
and power of the rulers. The education of its warriors should
therefore be a chief care of the state, in order that their spirit,
though losing none of its peculiar energy, may yet be penetrated
by reason. The best endowed by nature and culture among the
warriors, may be selected at the age of thirty, and put upon a
course of careful training. When he has reached the age of fifty
and looked upon the idea of the good, he may be bound to actualize
this archetype in the state, provided always that every one
wait his turn, and spend his remaining time in philosophy. Only
thus can the state be raised to the unconditioned rule of reason
under the supremacy of the good.