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He next proceeds with enthusiasm to define the royal art of dialectic as the power of dividing a whole into parts, and of uniting the parts in a whole, and which may also be regarded (compare Soph.) as the process of the mind talking with herself. The latter view has probably led Plato to the paradox that speech is superior to writing, in which he may seem also to be doing an injustice to himself. For the two cannot be fairly compared in the manner which Plato suggests. The contrast of the living and dead word, and the example of Socrates, which he has represented in the form of the Dialogue, seem to have misled him. For speech and writing have really different functions; the one is more transitory, more diffuse, more elastic and capable of adaptation to moods and times; the other is more permanent, more concentrated, and is uttered not to this or that person or audience, but to all the world. In the Politicus the paradox is carried further; the mind or will of the king is preferred to the written law; he is supposed to be the Law personified, the ideal made Life.
Yet in both these statements there is also contained a truth; they may be compared with one another, and also with the other famous paradox, that 'knowledge cannot be taught.' Socrates means to say, that what is truly written is written in the soul, just as what is truly taught grows up in the soul from within and is not forced upon it from without. When planted in a congenial soil the little seed becomes a tree, and 'the birds of the air build their nests in the branches.' There is an echo of this in the prayer at the end of the Dialogue, 'Give me beauty in the inward soul, and may the inward and outward man be at one.' We may further compare the words of St. Paul, 'Written not on tables of stone, but on fleshly tables of the heart;' and again, 'Ye are my epistles known and read of all men.' There may be a use in writing as a preservative against the forgetfulness of old age, but to live is higher far, to be ourselves the book, or the epistle, the truth embodied in a person, the Word made flesh. Something like this we may believe to have passed before Plato's mind when he affirmed that speech was superior to writing. So in other ages, weary of literature and criticism, of making many books, of writing articles in reviews, some have desired to live more closely in communion with their fellow-men, to speak heart to heart, to speak and act only, and not to write, following the example of Socrates and of Christ...
Some other touches of inimitable grace and art and of the deepest wisdom may be also noted; such as the prayer or 'collect' which has just been cited, 'Give me beauty,' etc.; or 'the great name which belongs to God alone;' or 'the saying of wiser men than ourselves that a man of sense should try to please not his fellow-servants, but his good and noble masters,' like St. Paul again; or the description of the 'heavenly originals'...
The chief criteria for determining the date of the Dialogue are (1) the ages of Lysias and Isocrates; (2) the character of the work.
Lysias was born in the year 458; Isocrates in the year 436, about seven years before the birth of Plato. The first of the two great rhetoricians is described as in the zenith of his fame; the second is still young and full of promise. Now it is argued that this must have been written in the youth of Isocrates, when the promise was not yet fulfilled. And thus we should have to assign the Dialogue to a year not later than 406, when Isocrates was thirty and Plato twenty-three years of age, and while Socrates himself was still alive.
Those who argue in this way seem not to reflect how easily Plato can 'invent Egyptians or anything else,' and how careless he is of historical truth or probability. Who would suspect that the wise Critias, the virtuous Charmides, had ended their lives among the thirty tyrants? Who would imagine that Lysias, who is here assailed by Socrates, is the son of his old friend Cephalus? Or that Isocrates himself is the enemy of Plato and his school? No arguments can be drawn from the appropriateness or inappropriateness of the characters of Plato. (Else, perhaps, it might be further argued that, judging from their extant remains, insipid rhetoric is far more characteristic of Isocrates than of Lysias.) But Plato makes use of names which have often hardly any connection with the historical characters to whom they belong. In this instance the comparative favour shown to Isocrates may possibly be accounted for by the circumstance of his belonging to the aristocratical, as Lysias to the democratical party.
Few persons will be inclined to suppose, in the superficial manner of some ancient critics, that a dialogue which treats of love must necessarily have been written in youth. As little weight can be attached to the argument that Plato must have visited Egypt before he wrote the story of Theuth and Thamus. For there is no real proof that he ever went to Egypt; and even if he did, he might have known or invented Egyptian traditions before he went there. The late date of the Phaedrus will have to be established by other arguments than these: the maturity of the thought, the perfection of the style, the insight, the relation to the other Platonic Dialogues, seem to contradict the notion that it could have been the work of a youth of twenty or twenty-three years of age. The cosmological notion of the mind as the primum mobile, and the admission of impulse into the immortal nature, also afford grounds for assigning a later date. (Compare Tim., Soph., Laws.) Add to this that the picture of Socrates, though in some lesser particulars,—e.g. his going without sandals, his habit of remaining within the walls, his emphatic declaration that his study is human nature,—an exact resemblance, is in the main the Platonic and not the real Socrates. Can we suppose 'the young man to have told such lies' about his master while he was still alive? Moreover, when two Dialogues are so closely connected as the Phaedrus and Symposium, there is great improbability in supposing that one of them was written at least twenty years after the other. The conclusion seems to be, that the Dialogue was written at some comparatively late but unknown period of Plato's life, after he had deserted the purely Socratic point of view, but before he had entered on the more abstract speculations of the Sophist or the Philebus. Taking into account the divisions of the soul, the doctrine of transmigration, the contemplative nature of the philosophic life, and the character of the style, we shall not be far wrong in placing the Phaedrus in the neighbourhood of the Republic; remarking only that allowance must be made for the poetical element in the Phaedrus, which, while falling short of the Republic in definite philosophic results, seems to have glimpses of a truth beyond.
Two short passages, which are unconnected with the main subject of the Dialogue, may seem to merit a more particular notice: (1) the locus classicus about mythology; (2) the tale of the grasshoppers.
The first passage is remarkable as showing that Plato was entirely free from what may be termed the Euhemerism of his age. For there were Euhemerists in Hellas long before Euhemerus. Early philosophers, like Anaxagoras and Metrodorus, had found in Homer and mythology hidden meanings. Plato, with a truer instinct, rejects these attractive interpretations; he regards the inventor of them as 'unfortunate;' and they draw a man off from the knowledge of himself. There is a latent criticism, and also a poetical sense in Plato, which enable him to discard them, and yet in another way to make use of poetry and mythology as a vehicle of thought and feeling. What would he have said of the discovery of Christian doctrines in these old Greek legends? While acknowledging that such interpretations are 'very nice,' would he not have remarked that they are found in all sacred literatures? They cannot be tested by any criterion of truth, or used to establish any truth; they add nothing to the sum of human knowledge; they are—what we please, and if employed as 'peacemakers' between the new and old are liable to serious misconstruction, as he elsewhere remarks (Republic). And therefore he would have 'bid Farewell to them; the study of them would take up too much of his time; and he has not as yet learned the true nature of religion.' The 'sophistical' interest of Phaedrus, the little touch about the two versions of the story, the ironical manner in which these explanations are set aside—'the common opinion about them is enough for me'—the allusion to the serpent Typho may be noted in passing; also the general agreement between the tone of this speech and the remark of Socrates which follows afterwards, 'I am a diviner, but a poor one.'