Socrates returns to the consideration of the question 'whether virtue is teachable,' which was denied on the ground that there are no teachers of it: (for the Sophists are bad teachers, and the rest of the world do not profess to teach). But there is another point which we failed to observe, and in which Gorgias has never instructed Meno, nor Prodicus Socrates. This is the nature of right opinion. For virtue may be under the guidance of right opinion as well as of knowledge; and right opinion is for practical purposes as good as knowledge, but is incapable of being taught, and is also liable, like the images of Daedalus, to 'walk off,' because not bound by the tie of the cause. This is the sort of instinct which is possessed by statesmen, who are not wise or knowing persons, but only inspired or divine. The higher virtue, which is identical with knowledge, is an ideal only. If the statesman had this knowledge, and could teach what he knew, he would be like Tiresias in the world below,—'he alone has wisdom, but the rest flit like shadows.'
This Dialogue is an attempt to answer the question, Can virtue be taught? No one would either ask or answer such a question in modern times. But in the age of Socrates it was only by an effort that the mind could rise to a general notion of virtue as distinct from the particular virtues of courage, liberality, and the like. And when a hazy conception of this ideal was attained, it was only by a further effort that the question of the teachableness of virtue could be resolved.
The answer which is given by Plato is paradoxical enough, and seems rather intended to stimulate than to satisfy enquiry. Virtue is knowledge, and therefore virtue can be taught. But virtue is not taught, and therefore in this higher and ideal sense there is no virtue and no knowledge. The teaching of the Sophists is confessedly inadequate, and Meno, who is their pupil, is ignorant of the very nature of general terms. He can only produce out of their armoury the sophism, 'that you can neither enquire into what you know nor into what you do not know;' to which Socrates replies by his theory of reminiscence.
To the doctrine that virtue is knowledge, Plato has been constantly tending in the previous Dialogues. But the new truth is no sooner found than it vanishes away. 'If there is knowledge, there must be teachers; and where are the teachers?' There is no knowledge in the higher sense of systematic, connected, reasoned knowledge, such as may one day be attained, and such as Plato himself seems to see in some far off vision of a single science. And there are no teachers in the higher sense of the word; that is to say, no real teachers who will arouse the spirit of enquiry in their pupils, and not merely instruct them in rhetoric or impart to them ready-made information for a fee of 'one' or of 'fifty drachms.' Plato is desirous of deepening the notion of education, and therefore he asserts the paradox that there are no educators. This paradox, though different in form, is not really different from the remark which is often made in modern times by those who would depreciate either the methods of education commonly employed, or the standard attained—that 'there is no true education among us.'
There remains still a possibility which must not be overlooked. Even if there be no true knowledge, as is proved by 'the wretched state of education,' there may be right opinion, which is a sort of guessing or divination resting on no knowledge of causes, and incommunicable to others. This is the gift which our statesmen have, as is proved by the circumstance that they are unable to impart their knowledge to their sons. Those who are possessed of it cannot be said to be men of science or philosophers, but they are inspired and divine.
There may be some trace of irony in this curious passage, which forms the concluding portion of the Dialogue. But Plato certainly does not mean to intimate that the supernatural or divine is the true basis of human life. To him knowledge, if only attainable in this world, is of all things the most divine. Yet, like other philosophers, he is willing to admit that 'probability is the guide of life (Butler's Analogy.);' and he is at the same time desirous of contrasting the wisdom which governs the world with a higher wisdom. There are many instincts, judgments, and anticipations of the human mind which cannot be reduced to rule, and of which the grounds cannot always be given in words. A person may have some skill or latent experience which he is able to use himself and is yet unable to teach others, because he has no principles, and is incapable of collecting or arranging his ideas. He has practice, but not theory; art, but not science. This is a true fact of psychology, which is recognized by Plato in this passage. But he is far from saying, as some have imagined, that inspiration or divine grace is to be regarded as higher than knowledge. He would not have preferred the poet or man of action to the philosopher, or the virtue of custom to the virtue based upon ideas.
Also here, as in the Ion and Phaedrus, Plato appears to acknowledge an unreasoning element in the higher nature of man. The philosopher only has knowledge, and yet the statesman and the poet are inspired. There may be a sort of irony in regarding in this way the gifts of genius. But there is no reason to suppose that he is deriding them, any more than he is deriding the phenomena of love or of enthusiasm in the Symposium, or of oracles in the Apology, or of divine intimations when he is speaking of the daemonium of Socrates. He recognizes the lower form of right opinion, as well as the higher one of science, in the spirit of one who desires to include in his philosophy every aspect of human life; just as he recognizes the existence of popular opinion as a fact, and the Sophists as the expression of it.
This Dialogue contains the first intimation of the doctrine of reminiscence and of the immortality of the soul. The proof is very slight, even slighter than in the Phaedo and Republic. Because men had abstract ideas in a previous state, they must have always had them, and their souls therefore must have always existed. For they must always have been either men or not men. The fallacy of the latter words is transparent. And Socrates himself appears to be conscious of their weakness; for he adds immediately afterwards, 'I have said some things of which I am not altogether confident.' (Compare Phaedo.) It may be observed, however, that the fanciful notion of pre-existence is combined with a true but partial view of the origin and unity of knowledge, and of the association of ideas. Knowledge is prior to any particular knowledge, and exists not in the previous state of the individual, but of the race. It is potential, not actual, and can only be appropriated by strenuous exertion.
The idealism of Plato is here presented in a less developed form than in the Phaedo and Phaedrus. Nothing is said of the pre-existence of ideas of justice, temperance, and the like. Nor is Socrates positive of anything but the duty of enquiry. The doctrine of reminiscence too is explained more in accordance with fact and experience as arising out of the affinities of nature (ate tes thuseos oles suggenous ouses). Modern philosophy says that all things in nature are dependent on one another; the ancient philosopher had the same truth latent in his mind when he affirmed that out of one thing all the rest may be recovered. The subjective was converted by him into an objective; the mental phenomenon of the association of ideas (compare Phaedo) became a real chain of existences. The germs of two valuable principles of education may also be gathered from the 'words of priests and priestesses:' (1) that true knowledge is a knowledge of causes (compare Aristotle's theory of episteme); and (2) that the process of learning consists not in what is brought to the learner, but in what is drawn out of him.
Some lesser points of the dialogue may be noted, such as (1) the acute observation that Meno prefers the familiar definition, which is embellished with poetical language, to the better and truer one; or (2) the shrewd reflection, which may admit of an application to modern as well as to ancient teachers, that the Sophists having made large fortunes; this must surely be a criterion of their powers of teaching, for that no man could get a living by shoemaking who was not a good shoemaker; or (3) the remark conveyed, almost in a word, that the verbal sceptic is saved the labour of thought and enquiry (ouden dei to toiouto zeteseos). Characteristic also of the temper of the Socratic enquiry is, (4) the proposal to discuss the teachableness of virtue under an hypothesis, after the manner of the mathematicians; and (5) the repetition of the favourite doctrine which occurs so frequently in the earlier and more Socratic Dialogues, and gives a colour to all of them—that mankind only desire evil through ignorance; (6) the experiment of eliciting from the slave-boy the mathematical truth which is latent in him, and (7) the remark that he is all the better for knowing his ignorance.
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