A History of Philosophy in Epitome

by Albert Schwegler

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.