In order to gather Plato’s philosophy from his dialogues, what we have to do is to distinguish what belongs to ordinary conception—especially where Plato has recourse to myths for the presentation of a philosophic idea—from the philosophic idea itself; only then do we know that what belongs only to the ordinary conception, as such, does not belong to thought, is not the essential. But if we do not recognize what is Notion, or what is speculative, there is inevitably the danger of these myths leading us to draw quite a host of maxims and theorems from the dialogues, and to give them out as Plato’s philosophic propositions, while they are really nothing of the kind, but belong entirely to the manner of presentation. Thus, for instance, in the Timæus (p. 41 Steph.; p. 43 Bekk.) Plato makes use of the form, God created the world, and the dæmons had a certain share in the work; this is spoken quite after the manner of the popular conception. If, however, it is taken as a philosophic dogma on Plato’s part that God made the world, that higher beings of a spiritual kind exist, and, in the creation of the world, lent God a helping hand, we may see that this stands word for word in Plato, and yet it does not belong to his philosophy. When in pictorial fashion he says of the soul of man that it has a rational and an irrational part, this is to be taken only in a general sense; Plato does not thereby make the philosophic assertion that the soul is compounded of two kinds of substance, two kinds of thing. When he represents knowledge or learning as a process of recollection, this may be taken to mean that the soul existed before man’s birth. In like manner, when he speaks of the central point of his philosophy, of Ideas, of the Universal, as the permanently self-existent, as the patterns of things sensible, we may easily be led to think of these Ideas, after the manner of the modern categories of the understanding, as substances which exist outside reality, in the Understanding of God; or on their own account and as independent—like the angels, for example. In short, all that is expressed in the manner of pictorial conception is taken by the moderns in sober earnest for philosophy. Such a representation of Plato’s philosophy can be supported by Plato’s own words; but one who knows what Philosophy is, cares little for such expressions, and recognizes what was Plato’s true meaning.

In the account of the Platonic philosophy to which I must now proceed, the two cannot certainly be separated, but they must be noted and judged of in a very different manner from that which has prevailed amongst the moderns. We have, on the one hand, to make clear Plato’s general conception of what Philosophy and Knowledge really are, and on the other to develop the particular branches of Philosophy of which he treats.

In considering his general conception of Philosophy, the first point that strikes us is the high estimation in which Plato held Philosophy. The lofty nature of the knowledge of Philosophy deeply impressed him, and he shows a real enthusiasm for the thought which deals with the absolute. Just as the Cyrenaics treat of the relation of the existent to the individual consciousness, and the Cynics assert immediate freedom to be reality, Plato upholds the self-mediating unity of consciousness and reality, or knowledge. He everywhere expresses the most exalted ideas regarding the value of Philosophy, as also the deepest and strongest sense of the inferiority of all else; he speaks of it with the greatest energy and enthusiasm, with all the pride of science, and in a manner such as nowadays we should not venture to adopt. There is in him none of the so-called modest attitude of this science towards other spheres of knowledge, nor of man towards God. Plato has a full consciousness of how near human reason is to God, and indeed of its unity with Him. Men do not mind reading this in Plato, an ancient, because it is no longer a present thing, but were it coming from a modern philosopher, it would be taken much amiss. Philosophy to Plato is man’s highest possible possession and true reality; it alone has to be sought of man. Out of many passages on this subject I shall quote in the first instance the following from the Timæus (p. 47 Steph.; p. 54 Bekk.): “Our knowledge of what is most excellent begins with the eyes. The distinction between the visible day and the night, the months and courses of the planets, have begotten a knowledge of time, and awakened a desire to know the nature of the whole. From this we then obtained Philosophy, and no greater gift than this, given by God to man, has ever come or will come.”

The manner in which Plato expresses his opinions on this subject in the Republic is very well known, as it is greatly decried, because it so completely contradicts the common ideas of men, and it is all the more surprising in that it concerns the relation of Philosophy to the state, and therefore to actuality. For before this, though a certain value might indeed be attributed to Philosophy, it still remained confined to the thoughts of the individual; here, however, it goes forth into questions of constitution, government, actuality. After Plato made Socrates, in the Republic, expound the nature of a true state, he caused Glaucon to interrupt by expressing his desire that Plato should show how it could be possible for such a state to exist. Socrates parries the question, will not come to the point, seeks evasive pleas, and tries to extricate himself by asserting that in describing what is just, he does not bind himself to show how it might be realized in actuality, though some indication must certainly be given of how an approximate, if not a complete realization of it might be possible. Finally, when pressed, he says: “Then it shall be expressed, even though a flood of laughter and utter disbelief overwhelm me. When philosophers rule the states, or the so-called kings and princes of the present time are truly and completely philosophers, when thus political greatness and Philosophy meet in one, and the many natures who now follow either side to the exclusion of the other, come together, then, and not till then, can there be an end, dear Glaucon, either to the evils of the state or, as I believe, to those of the human race. Then only will this state of which I spoke be possible or see the light of day.” “This,” adds Socrates, “is what I have so long hesitated to say, because I know that it is so much opposed to ordinary ideas.” Plato makes Glaucon answer, “Socrates, you have expressed what, you must recollect, would cause many men, and not bad men either, to pull off their coats and seize the first weapon that comes to hand, and set upon you one and all with might and main; and if you don’t know how to appease them with your reasons, you will have to answer for it.”[15]

Plato here plainly asserts the necessity for thus uniting Philosophy with government. As to this demand, it may seem a piece of great presumption to say that philosophers should have the government of states accorded to them, for the territory or ground of history is different from that of Philosophy. In history, the Idea, as the absolute power, has certainly to realize itself; in other words, God rules in the world. But history is the Idea working itself out in a natural way, and not with the consciousness of the Idea. The action is certainly in accordance with general reflections on what is right, moral, and pleasing to God; but we must recognize that action represents at the same time the endeavours of the subject as such for particular ends. The realization of the Idea thus takes place through an intermingling of thoughts and Notions with immediate and particular ends. Hence it is only on the one side produced through thoughts, and on the other through circumstances, through human actions in their capacity of means. These means often seem opposed to the Idea, but that does not really matter; all those particular ends are really only means of bringing forth the Idea, because it is the absolute power. Hence the Idea comes to pass in the world, and no difficulty is caused, but it is not requisite that those who rule should have the Idea.

In order, however, to judge of the statement that the regents of the people should be philosophers, we must certainty consider what was understood by Philosophy in the Platonic sense and in the sense of the times. The word Philosophy has had in different periods very different significations. There was a time when a man who did not believe in spectres or in the devil was called a philosopher. When such ideas as these pass away, it does not occur to people to call anyone a philosopher for a reason such as this. The English consider what we call experimental physics to be Philosophy; a philosopher to them is anyone who makes investigations in, and possesses a theoretic knowledge of chemistry, mechanics, &c. (Vol. I. p. 57). In Plato Philosophy becomes mingled with the knowledge of the supersensuous, or what to us is religious knowledge. The Platonic philosophy is thus the knowledge of the absolutely true and right, the knowledge of universal ends in the state, and the recognition of their validity. In all the history of the migration of the nations, when the Christian religion became the universal religion, the only point of interest was to conceive the supersensuous kingdom—which was at first independent, absolutely universal and true—as actualized, and to determine actuality in conformity thereto. This has been from that time forth the business of culture. A state, a government and constitution of modern times has hence quite a different basis from a state of ancient times, and particularly from one of Plato’s day. The Greeks were then altogether dissatisfied with their democratic constitution, and the conditions resulting from it (supra, p. 8), and similarly all philosophers condemned the democracies of the Greek states in which such things as the punishment of generals (supra, Vol. I. p. 391) took place. In such a constitution it might certainly be thought that what was best for the state would be the first subject of consideration; but arbitrariness prevailed, and this was only temporarily restrained by preponderating individualities, or by masters in statesmanship like Aristides, Themistocles, and others. This condition of matters preceded the disintegration of the constitution. In our states, on the other hand, the end of the state, what is best for all, is immanent and efficacious in quite another way than was the case in olden times. The condition of the laws and courts of justice, of the constitution and spirit of the people, is so firmly established in itself that matters of the passing moment alone remain to be decided; and it may even be asked what, if anything, is dependent on the individual.

To us government means that in the actual state procedure will be in accordance with the nature of the thing, and since a knowledge of the Notion of the thing is requisite to this, actuality is brought into harmony with the Notion, and thereby the Idea is realized in existence. The result of this thus is that when Plato says that philosophers should rule, he signifies the determination of the whole matter through universal principles. This is realized much more in modern states, because universal principles really form the bases—certainly not of all, but of most of them. Some have already reached this stage, others are striving to reach it, but all recognize that such principles must constitute the real substance of administration and rule.

What Plato demands is thus, in point of fact, already present. But what we call Philosophy, movement in pure thoughts, has to do with form, and this is something peculiar to itself; nevertheless, the form is not responsible if the universal, freedom, law, is not made a principle in a state. Marcus Aurelius is an example of what a philosopher upon a throne could effect; we have, however, only private actions to record of him, and the Roman Empire was made no better by him. Frederick II. was, on the other hand, justly called the philosopher king. He occupied himself with the Wolffian metaphysics and French philosophy and verses, and was thus, according to his times, a philosopher. Philosophy appears to have been an affair of his own particular inclination, and quite distinct from the fact that he was king. But he was also a philosophic king in the sense that he made for himself an entirely universal end, the well-being and good of the state, a guiding principle in his actions and in all his regulations in respect to treaties with other states, and to the rights of individuals at home; these last he entirely subordinated to absolutely universal ends. If, however, later on, procedure of this kind became ordinary custom, the succeeding princes are no longer called philosophers, even if the same principle is present to them, and the government, and especially the institutions, are founded on it.

In the Republic, Plato further speaks in a figure of the difference between a condition of philosophic culture and a lack of Philosophy: it is a long comparison which is both striking and brilliant. The idea which he makes use of is as follows:—“Let us think of an underground den like a cave with a long entrance opening to the light. Its inhabitants are chained so that they cannot move their necks, and can see only the back of the cave. Far behind their backs a torch burns above them. In the intervening space there is a raised way and also a low wall; and behind this wall” (towards the light) “there are men who carry and raise above it all manner of statues of men and animals like puppets in a marionette show, sometimes talking to one another meanwhile, and sometimes silent. Those who are chained would see only the shadows which fall on the opposite wall, and they would take them for reality; they would hear, moreover, by means of the echo, what was said by those who moved the figures, and they would think that it was the voice of the shadows. Now if one of the prisoners were released, and compelled to turn his neck so as to see things as they are, he would think that what he saw was an illusive dream, and that the shadows were the reality. And if anyone were to take him out of the prison into the light itself, he would be dazzled by the light and could see nothing; and he would hate the person who brought him to the light, as having taken away what was to him the truth, and prepared only pain and evil in its place.”[16] This kind of myth is in harmony with the character of the Platonic philosophy, in that it separates the conception of the sensuous world present in men from the knowledge of the supersensuous.