A second difficulty is said to lie in the distinction drawn between exoteric and esoteric philosophy. Tennemann (Vol. II. p. 220) says: “Plato exercised the right, which is conceded to every thinker, of communicating only so much of his discoveries as he thought good, and of so doing only to those whom he credited with capacity to receive it. Aristotle, too, had an esoteric and an exoteric philosophy, but with this difference, that in his case the distinction was merely formal, while with Plato it was also material.” How nonsensical! This would appear as if the philosopher kept possession of his thoughts in the same way as of his external goods: the philosophic Idea is, however, something utterly different, and instead of being possessed by, it possesses a man. When philosophers discourse on philosophic subjects, they follow of necessity the course of their ideas; they cannot keep them in their pockets; and when one man speaks to another, if his words have any meaning at all, they must contain the idea present to him. It is easy enough to hand over an external possession, but the communication of ideas requires a certain skill; there is always something esoteric in this, something more than the merely exoteric. This difficulty is therefore trifling.
Thirdly, as one of the circumstances that render it difficult to comprehend Plato’s own speculative thought, we can scarcely reckon the external consideration that in his Dialogues he does not speak in his own person, but introduces Socrates and many others as the speakers, without always making it plain which of them expresses the writer’s own opinion. By reason of this historic circumstance, which seems to bear out the manysidedness of Plato, it has of course been often said, by ancients as well as moderns, that he merely expounded, from a historical point of view, the system and doctrine of Socrates, that he adapted much in the Dialogues from various Sophists, and avowedly advanced many theorems belonging to an earlier date, especially those of the Pythagoreans, Heraclitics, and Eleatics, even adopting, in the last case, the Eleatic mode of treatment. Hence it was said that to these philosophies the whole matter of the treatise belonged, the outward form alone being Plato’s. It is therefore necessary to distinguish what is peculiarly his and what is not, or whether the component parts are in harmony. In the Socratic Dialogues that we have from Cicero, the personages can be much more readily made out; but in Cicero there is nothing of real interest offered to us. With Plato there can be no talk of this ambiguity, and the difficulty is only in appearance. In the Dialogues of Plato his philosophy is quite clearly expressed; they are not constructed as are the conversations of some people, which consist of many monologues, in which one person expresses a certain opinion and another person differs from him, and both hold to their own way of thinking. Here, on the contrary, the divergency of opinions which comes out is examined, and a conclusion arrived at as to the truth; or, if the result is negative, the whole process of knowledge is what is seen in Plato. There is, therefore, no need to inquire further as to what belongs to Socrates in the Dialogues, and what belongs to Plato. This further observation we must, however, make, that since Philosophy in its ultimate essence is one and the same, every succeeding philosopher will and must take up into his own, all philosophies that went before, and what falls specially to him is their further development. Philosophy is not a thing apart, like a work of art; though even in a work of art it is the skill which the artist learns from others that he puts into practice. What is original in the artist is his conception as a whole, and the intelligent use of the means already at his command; there may occur to him in working an endless variety of ideas and discoveries of his own. But Philosophy has one thought, one reality, as its foundation; and nothing can be put in the place of the true knowledge of this already attained; it must of necessity make itself evident in later developments. Therefore, as I have already observed (Vol. I. p. 166), Plato’s Dialogues are not to be considered as if their aim were to put forward a variety of philosophies, nor as if Plato’s were an eclectic philosophy derived from them; it forms rather the knot in which these abstract and one-sided principles have become truly united in a concrete fashion. In giving a general idea of the history of Philosophy, we have already seen (Vol. I. p. 54) that such points of union, in which the true is concrete, must occur in the onward course of philosophical development. The concrete is the unity of diverse determinations and principles; these, in order to be perfected, in order to come definitely before the consciousness, must first of all be presented separately. Thereby they of course acquire an aspect of one-sidedness in comparison with the higher principle which follows: this, nevertheless, does not annihilate them, nor even leave them where they were, but takes them up into itself as moments. Thus in Plato’s philosophy we see all manner of philosophic teaching from earlier times absorbed into a deeper principle, and therein united. It is in this way that Plato’s philosophy shows itself to be a totality of ideas: therefore, as the result, the principles of others are comprehended in itself. Frequently Plato does nothing more than explain the doctrines of earlier philosophers; and the only particular feature in his representation of them is that their scope is extended. His Timæus is, by unanimous testimony, the amplification of a still extant work of Pythagoras;[14] and, in like manner, his amplification of the doctrine of Parmenides is of such a nature that its principle is freed from its one-sided character.
These last two difficulties having been disposed of, if we would likewise solve the first mentioned, we must proceed to describe the form in which Plato has propounded his ideas, keeping it, on the other hand, distinct from Philosophy proper, as we find it with him. The form of the Platonic philosophy is, as is well known, the dialogue. The beauty of this form is highly attractive; yet we must not think, as many do, that it is the most perfect form in which to present Philosophy; it is peculiar to Plato, and as a work of art is of course to be much esteemed.
In the first place, scenery and dramatic form belong to what is external. Plato gives to his Dialogues a setting of reality, both as regards place and persons, and chooses out some particular occasion which has brought his characters together; this in itself is very natural and charming. Socrates takes the leading part, and among the other actors there are many stars well known to us, such as Agathon, Zeno, and Aristophanes. We find ourselves in some particular spot; in the Phædrus (p. 229 Steph.; p. 6 Bekk.) it is at the plane tree beside the clear waters of the Ilyssus, through which Socrates and Phædrus pass; in other dialogues we are conducted to the halls of the gymnasia, to the Academy, or to a banquet. By never allowing himself to appear in person, but putting his thoughts always in the mouth of others, any semblance of preaching or of dogmatizing is avoided by Plato, and the narrator appears just as little as he does in the History of Thucydides or in Homer. Xenophon sometimes brings himself forward, sometimes he entirely loses sight of the aim he had in view, of vindicating by what he tells of them the life of Socrates and his method of instruction. With Plato, on the contrary, all is quite objective and plastic; and he employs great art in removing from himself all responsibility for his assertions, often assigning them even to a third or fourth person.
As regards the tone of the intercourse between the characters in these Dialogues, we find that the noblest urbanity of well-bred men reigns supreme; the Dialogues are a lesson in refinement; we see in them the savoir faire of a man acquainted with the world. The term courtesy does not quite express urbanity; it is too wide, and includes the additional notion of testifying respect, of expressing deference and personal obligation; urbanity is true courtesy, and forms its real basis. But urbanity makes a point of granting complete liberty to all with whom we converse, both as regards the character and matter of their opinions, and also the right of giving expression to the same. Thus in our counter-statements and contradictions we make it evident that what we have ourselves to say against the statement made by our opponent is the mere expression of our subjective opinion; for this is a conversation carried on by persons as persons, and not objective reason talking with itself. However energetically we may then express ourselves, we must always acknowledge that our opponent is also a thinking person; just as one must not take to speaking with the air of being an oracle, nor prevent anyone else from opening his mouth in reply. This urbanity is, however, not forbearance, but rather the highest degree of frankness and candour, and it is this very characteristic which gives such gracefulness to Plato’s Dialogues.
Finally, this dialogue is not a conversation, in which what is said has, and is meant to have, a merely casual connection, without any exhaustive treatment of the subject. When one talks only for amusement, the casual and arbitrary sequence of ideas is quite to be expected. In the introduction, to be sure, the Dialogues of Plato have sometimes this very character of being mere conversations, and consequently appear to take an accidental form; for Socrates is made to take his start from the particular conceptions of certain individuals, and from the circle of their ideas (Vol. I. p. 397). Later, however, these dialogues become a systematic development of the matter in hand, wherein the subjective character of the conversation disappears, and the whole course of the argument shows a beautifully consistent dialectic process. Socrates talks, turns the conversation, lays down his own views, draws a conclusion, and does all this through the apparent instrumentality of the question; most questions are so framed as to be answered by merely Yes or No. The dialogue seems to be the form best adapted for representing an argument, because it sways hither and thither; the different sides are allotted to different persons, and thus the argument is made more animated. The dialogue has, however, this disadvantage, that it seems to be carried on arbitrarily, so that at the end the feeling always remains that the matter might have turned out differently. But in the Platonic Dialogues this arbitrary character is apparent only; it has been got rid of by limiting the development to the development of the subject in hand, and by leaving very little to be said by the second speaker. Such personages are, as we already saw in connection with Socrates (Vol. I. p. 402), plastic personages as regards the conversation; no one is put there to state his own views, or, as the French express it, pour placer son mot. Just as in the Catechism the answers are prescribed to the questions asked, so is it in these dialogues, for they who answer have to say what the author pleases. The question is so framed that a quite simple answer is alone possible, and, thanks to the artistic beauty and power of the dialogues, such an answer appears at the same time perfectly natural.
In the next place, there is connected with this outward aspect of personality the circumstance that the Platonic philosophy does not proclaim itself to be one particular field, where some one begins a science of his own in a sphere of his own; for it sometimes enters into the ordinary conceptions of culture, like those of Socrates, sometimes into those of the Sophists, at other times into those of earlier philosophers, and in so doing brings before us exemplifications from ordinary knowledge, and also uses the methods of the same. A systematic exposition of Philosophy we cannot in this way find; and of course it is all the less easy for us to take a comprehensive view of the subject, since there are at hand no means of judging whether the treatment has been exhaustive or not. Nevertheless, there is present there one spirit, one definite point of view as regards Philosophy, even though Mind does not make its appearance in the precise form which we demand. The philosophic culture of Plato, like the general culture of his time, was not yet ripe for really scientific work; the Idea was still too fresh and new; it was only in Aristotle that it attained to a systematic scientific form of representation.
Connected with this deficiency in Plato’s mode of representation, there is also a deficiency in respect of the concrete determination of the Idea itself, since the various elements of the Platonic philosophy which are represented in these dialogues, namely the merely popular conceptions of Being and the apprehending knowledge of the same, are really mixed up in a loose, popular way, so that the former more especially come to be represented in a myth or parable; such intermingling is inevitable in this beginning of science proper in its true form. Plato’s lofty mind, which had a perception or conception of Mind, penetrated through his subject with the speculative Notion, but he only began to penetrate it thus, and he did not yet embrace the whole of its reality in the Notion; or the knowledge which appeared in Plato did not yet fully realize itself in him. Here it therefore happens sometimes that the ordinary conception of reality again separates itself from its Notion, and that the latter comes into opposition with it, without any statement having been made that the Notion alone constitutes reality. Thus we find Plato speaking of God, and again, in the Notion, of the absolute reality of things, but speaking of them as separated, or in a connection in which they both appear separated; and God, as an uncomprehended existence, is made to belong to the ordinary conception. Sometimes, in order to give greater completeness and reality, in place of following out the Notion, mere pictorial conceptions are introduced, myths, spontaneous imaginations of his own, or tales derived from the sensuous conception, which no doubt are determined by thought, but which this has never permeated in truth, but only in such a way that the intellectual is determined by the forms of ordinary conception. For instance, appearances of the body or of nature, which are perceptible by the senses, are brought forward along with thoughts regarding them, which do not nearly so completely exhaust the subject as if it had been thoroughly thought out, and the Notion allowed to pursue an independent course.
Looking at this as it bears on the question of how Plato’s philosophy is to be apprehended, we find, owing to these two circumstances, that either too much or too little is found in it. Too much is found by the ancients, the so-called -, who sometimes dealt with Plato’s philosophy as they dealt with the Greek mythology. This they allegorized and represented as the expression of ideas—which the myths certainly are—and in the same way they first raised the ideas in Plato’s myths to the rank of theorems: for the merit of Philosophy consists alone in the fact that truth is expressed in the form of the Notion. Sometimes, again, they took what with Plato is in the form of the Notion for the expression of Absolute Being—the theory of Being in the Parmenides, for instance, for the knowledge of God—just as if Plato had not himself drawn a distinction between them. But in the pure Notions of Plato the ordinary conception as such is not abrogated; either it is not said that these Notions constitute its reality, or they are to Plato no more than a conception, and not reality. Again, we certainly see that too little is found in Plato by the moderns in particular; for they attach themselves pre-eminently to the side of the ordinary conception, and see in it reality. What in Plato relates to the Notion, or what is purely speculative, is nothing more in their eyes than roaming about in abstract logical notions, or than empty subtleties: on the other hand, they take that for theorem which was enunciated as a popular conception. Thus we find in Tennemann (Vol. II. p. 376) and others an obstinate determination to lead back the Platonic Philosophy to the forms of our former metaphysic, e.g. to the proof of the existence of God.
However much, therefore, Plato’s mythical presentation of Philosophy is praised, and however attractive it is in his Dialogues, it yet proves a source of misapprehensions; and it is one of these misapprehensions, if Plato’s myths are held to be what is most excellent in his philosophy. Many propositions, it is true, are made more easily intelligible by being presented in mythical form; nevertheless, what is not the true way of presenting them; propositions are thoughts which, in order to be pure, must be brought forward as such. The myth is always a mode of representation which, as belonging to an earlier stage, introduces sensuous images, which are directed to imagination, not to thought; in this, however, the activity of thought is suspended, it cannot yet establish itself by its own power, and so is not yet free. The myth belongs to the pedagogic stage of the human race, since it entices and allures men to occupy themselves with the content; but as it takes away from the purity of thought through sensuous forms, it cannot express the meaning of Thought. When the Notion attains its full development, it has no more need of the myth. Plato often says that it is difficult to express one’s thoughts on such and such a subject, and he therefore will employ a myth; no doubt this is easier. Plato also says of simple Notions that they are dependent, transitory moments, which have their ultimate truth in God; and in this first mention of God by Plato, He is made a mere conception. Thus the manner of conception and the genuinely speculative element are confounded.