The
Philosophy of Plato
V.
Cosmology
The sensible world is presented to us
under a twofold aspect, the first rational, the
second irrational, corresponding respectively to
form (essence) and matter. Let us take a tree as an
example. We know that it is a tree because it has
the form of a tree. If we prescind from that form
and from any other form whatsoever, what remains?
There remains an element without form and hence
unintelligible.
Now if we follow this line of abstraction with
reference to all things in the sensible world, if
we thus prescind from all form, we find ourselves
confronting a space without form but filled with
formless matter. This is Chaos, Platonic non-being,
called such not because it is nothing, but because
there is in it no form (intelligible being). These
two aspects of sensible reality correspond to two
metaphysical states, preexistent to the sensible
world. Thus there is had on one hand
non-being (chaos, unformed matter) and on
the other being (Ideas), co-eternal and
opposed to each other. But how are these two
opposed worlds united to form this sensible world,
which is presented under the aspect of being and
non-being?
To resolve this problem Plato has recourse to
Demiurge, a divine artificer, the intermediary
between unformed matter and the world of Ideas.
Demiurge first infuses a soul into matter, by means
of which space takes on life and form. Then, with
successive infusions of souls, it forms the heavens
and the earth. Demiurge is directed in its labor
according to the order of the world of Ideas, which
are as it were models in ordering the matter.
In this way matter has become a participant in
the intelligible world, and through this
participation the world of experience is made up of
a combination of rational and irrational elements,
of being and non-being. Matter, in the order given
to it by Demiurge, remains always an opaque,
irrational element which tends to resist complete
penetration by the form, and hence is the root of
multiplicity of beings and also of their
imperfections. (Evil takes its origin from matter.)
The rational element is represented by the form.
But how is the form made present in matter by
Demiurge? Plato gives various answers. At times he
speaks of the descent of idea into matter; at other
times he speaks of imitation.
VI.
Psychology
The Soul
We have said that Plato, once having admitted
that knowledge of Ideas is anterior to sensitive
cognition, is presented with the question of when
and how the soul came into possession of this
knowledge. To solve this difficulty, Plato has
recourse to the Pythagorean theory of preexistence.
Souls exist before their bodies, and as Ideas and
unformed matter are eternal. From eternity they
exist together with Ideas, and it is thus that they
have come to know Ideas. Cast out of the ideal
world because of some mysterious fault, souls carry
within themselves the knowledge of these Ideas
(Innatism).
Such knowledge, however, from the very moment
the soul was banished from the ideal world and was
united to the body, falls into a kind of lethargy.
It will be the sensation, as we shall presently
see, that shakes the mind from its sleep and brings
it once more to the realization of the presence of
Ideas within itself. The soul which descends from
the invisible world to put on the mortal remains
which it must keep for the course of earthly life,
finds that the body already has an
irrational soul subdivided into two parts:
the irascible (impulsive and disdainful), with its
seat in the heart; and the consupiscible, residing
in the bowels and inclined to the ignoble pleasures
of the senses. The rational soul is that
which comes from the invisible world and takes its
seat in the head. Its union with the body is
extrinsic; the body is as it were its tomb, and it
must regulate the impulse of the irascible soul and
repress the desires of the concupiscible soul if it
wishes to live according to reason.
The immortality of the soul is a consequence of
the doctrine of the preexistence of souls. If souls
existed before the body the latter is not necessary
for their existence, and hence with death souls
return to live as before this union. In the
Phaedo, Plato has other more valid
arguments, such as that deduced from the nature of
the knowledge of Ideas, from which he deduces the
fact that the soul must be by nature similar to
Ideas, i.e., simple and not subject to changes.
Cognition as
reminiscence
The fundamental grades of cognition are two:
sensitive and intellective. The first is bound up
with the object which appears to our senses, hence
it is bound up with matter, and deprived of all
necessity and universality. It generates opinion,
which is a knowledge of the particular; it is
incapable of being taken as a basis of science,
which must transcend the particular and is founded
on the necessary and absolute.
Intellective cognition, on the other hand, is
real knowledge and forms the basis of science. As
we have said, the one is inderivable from the
other. Thus sensitive cognition, containing the
image (though faded) of the invisible world, offers
to the intellective soul the occasion of awakening
again in itself knowledge of the Ideas which it
already had in the suprasensitive world. The soul,
in the presence of the image offered by the senses,
acts like a slave who, bound to the door of a cave,
recognizes from the shadow projected on the cave's
depths whose image the shadow may be. ("The Myth of
the Cave," Republic, VII, 1-3.) Intellective
cognition for Plato is not the acquisition of new
content, but the reawakening of a knowledge already
possessed: it is nothing other than
reminiscence.
VII.
Ethics
The ethics of Plato is an application in
practice of the principles which had been reached
in the metaphysical field. We know that the soul,
which was happy in the contemplation of the ideal
world, now finds itself imprisoned in the body and
impelled by the pleasures of sense. To give in to
these impulses would mean to strengthen yet more
the bonds with matter and to render oneself ever
more distant from true happiness, which is in the
world of Ideas.
Reason wills, therefore, that the soul overcome
the obstacles which render it unworthy of
participating again in the ideal world and living
according to reason. The soul can be compared to
the driver of a chariot drawn by two horses, one
fast and the other slow: it is the duty of the
driver to restrain the first and to urge on the
second. These two horses are the two aspects of the
irrational soul, the irascible and concupiscible.
The driver, the rational soul, must restrain the
first from its inconsiderate impulses, and must
incite the second to good whenever it stops before
the pleasures of sense.
Mastery over irascible and concupiscible
impulses gives origin to two virtues,
fortitude and temperance. One who is
strong tempers the impulses of anger and eager
enthusiasm; he who is temperate moderates the
pleasures of the senses by bringing them under the
dominion of reason. The actuation of fortitude and
temperance is not possible without a third virtue,
namely, justice. Justice is fundamental in
Plato's philosophy in so far as, granted the
destiny of the soul, justice wills that during the
course of earthly life the rational soul must live
by dominating the two aspects of the irrational
soul without being overcome by them. All three of
the virtues mentioned, justice, fortitude and
temperance, have their origin in a fourth,
wisdom, the contemplation of the truth of
the ideal world, which is in itself virtue and
happiness.
This wisdom which is now found sleeping in
the soul must be aroused through the images of it
which are found in sensible things, and from
sensible things it must arise to the invisible and
supreme beauty, which is nether born nor dies.
(Symposium.) In so far as we draw near to
the contemplation of this supreme beauty, by so
much are we separated from the illusory life. Hence
Plato calls philosophy "the contemplation of
death."
Regarding the destiny of souls after death,
Plato is dependent not only on his philosophy but
also on the Orphic-Dionysian mysteries. In general
he distinguishes three classes of souls:
- Those that have committed inexpiable sins,
and hence are condemned forever;
- Those that have committed expiable
sins;
- Those living according to justice.
Souls in the last two categories are reborn and
reincarnated in order to receive their due
punishment or reward. According to Phaedo, a fourth
class of souls must be added, that of the
philosophers, seers of the idea, who are free
forever from the temporal life.
VIII.
Politics
The politics of Plato are the rigid application
of all that he had already recognized as true in
metaphysics and ethics. He does not regard the
empirical reality which surrounds him, the various
constitutions of Grecian cities, but has in view
the ideal world which is the norm of the true and
the good and hence of every virtue. He traces the
lines of a republic in which men must be organized
in such a way that they may realize to the maximum
extent that which it is given them to know of the
ideal world. And animated by the conviction that
material reality must be sacrificed to the ideal,
Plato is not brought to a stop even by those
consequences which at first sight seem paradoxes,
such as the partial abolition of property and of
the family.
Although Plato treats of state organization in
Politics and in Laws, his fundamental
treatise is the ten books of the Republic.
His thought can be summarized as follows:
First of all Plato finds that the necessity
for society and the state resides in human nature
itself. No one is sufficient in himself; everyone
needs the aid of others in order to live a life
worthy of man. Hence man must live with others in
society in order to make use of them both
materially and morally.
From the moment society arises out of the
necessity of meeting the needs of man, the members
which make up society must be organized into
different classes according to the diversity of
works to be be performed. Led by the theory that in
man there are two different souls, one of which has
two aspects, Plato establishes the teaching that in
society also there must be three different
organizations or classes: philosophers, warriors,
and producers, corresponding to the rational soul
and the two aspects of the irrational soul (the
irascible and the concupiscible).
Each of these classes has its special work to
fulfill:
- The philosophers must direct the state;
- The warriors must defend the state;
- The producers (subdivided into various
groups of arts and skills) must attend to the
material production of those things that are
needed by the state.
Thus Plato's state is eminently aristocratic.
Its direction is confided to a few philosophers
who, granted the Platonic identification of wisdom
and virtue, are also the best and hence are worthy
of directing all the others.
The philosophers, who live in the contemplation
of the ideal world, are, in the state, the
representatives of wisdom, which is the fundamental
virtue, as we have seen. The philosophers, because
they are wise, also know the essence of the state
and can show the other two classes the way that
must be followed in order to attain the end of the
state. They must restrain the warriors from their
irrational impulses, and thus there arises rational
fortitude; they must restrain the passions and
greed of the producers; this restraint gives rise
to the virtue of temperance. Thus is attained the
virtue of justice, which we know to be, after
wisdom, the fundamental virtue of human life.
The state must also take care of education in
order to procure new leaders. Practically speaking,
education is restricted to the warrior class, from
which the (philosophers) were elected to the head
of the state. The producers' class is not
considered because of the Greek prejudice against
manual labor. Education comprises music and
gymnastics, the first to render the spirit amiable;
music includes not only music properly speaking,
but also poetry, history, and so forth -- all the
activities presided over by the Muses. Hence the
name "music." Gymnastics serves to render the body
shapely and strong, and must be subordinated to
music because physical development, if not
regulated by the mind, produces unmannerly and
materialistic people. Hence Plato has a certain
aversion to physical exercise.
The state thus thought out by Plato is an
ethico-religious organism which must care for the
material good of the citizens and above all lead
them to the attainment of the ideal of virtue. The
citizens of Plato's state must concern themselves
with living in accord with the transcendent world
and not give in to the inclinations of sense and
passion. The great personage is not the one who
does great things, but the one who knows how to
live wisely.
Plato is ready to sacrifice everything. Thus he
denied the family and the right of private property
to the philosopher and warrior classes. He
understood that attachment to one's own family and
greed for material goods could be grave impediments
preventing these two classes from fulfilling their
duty, in view of the fact that the latter have to
defend the state even at the cost of their lives
and the former have to live completely in the
contemplation of virtue. In Plato private property
and the family find place only in the class called
producers.
To see Plato as the precursor of present-day
Socialism and Communism is to misconstrue his
entire ethical teaching. He denied the family and
the right to property to two classes in the state
because these classes must be completely freed from
the shackles of material goods and intent on
attaining a grade of spiritualization. On the
contrary, Socialism and Communism of the present
day deny private property and would abolish the
institution of the family for a thoroughly
materialistic purpose, that is, to make possible
greater material prosperity.
IX.
Art
In Book X of the Republic, Plato strives
to prove that art is a secondhand imitation (a
shadow of a shadow) of being and of good, but that
only the wise (the philosophers) have a knowledge
of these. He concludes that, with the exception of
lyric poetry in honor of the gods and heroes, art
has no place in the well-organized state. Art,
according to Plato, is a copy of empirical reality.
A bed which the artist reproduces upon canvas is
only a copy of a bed which he finds in the
multiplicity of nature, and this in turn is a copy
of a bed in se which exists in the world of
Ideas.
Poetry, both because of its unrealistic content
(Homer represents Zeus as a bird, and the souls of
the deceased as a swarm of bees), and because of
its end, which is to excite the passions that have
their seat in the concupiscible soul, is an
imitation which is far from the true and the good;
hence poetry must be banished from a well-organized
city, where men must live in such a way as to
ascend to the ideal world.
It is the usual preoccupation with morals which
induces Plato to condemn art in so far as he sees
in it the danger of corruption rather than a means
of elevation. But as an artist-philosopher, Plato
could understand that art is not a simple
imitation, a reproducing of empirical reality. In
the Symposium he affirms that art is a
mania, a divine madness which places the artist
above the common run of man, and he concludes
that a person who does not have this divine
influence knocks in vain at the door of art.
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