The name of the grandson of Alcibiades, who is described as long dead, (Greek), and who died at the age of forty-four, in the year 404 B.C., suggests not only that the intended scene of the Euthydemus could not have been earlier than 404, but that as a fact this Dialogue could not have been composed before 390 at the soonest. Ctesippus, who is the lover of Cleinias, has been already introduced to us in the Lysis, and seems there too to deserve the character which is here given him, of a somewhat uproarious young man. But the chief study of all is the picture of the two brothers, who are unapproachable in their effrontery, equally careless of what they say to others and of what is said to them, and never at a loss.
They are 'Arcades ambo et cantare pares et respondere parati.' Some superior degree of wit or subtlety is attributed to Euthydemus, who sees the trap in which Socrates catches Dionysodorus.
The epilogue or conclusion of the Dialogue has been criticised as inconsistent with the general scheme. Such a criticism is like similar criticisms on Shakespeare, and proceeds upon a narrow notion of the variety which the Dialogue, like the drama, seems to admit. Plato in the abundance of his dramatic power has chosen to write a play upon a play, just as he often gives us an argument within an argument. At the same time he takes the opportunity of assailing another class of persons who are as alien from the spirit of philosophy as Euthydemus and Dionysodorus. The Eclectic, the Syncretist, the Doctrinaire, have been apt to have a bad name both in ancient and modern times. The persons whom Plato ridicules in the epilogue to the Euthydemus are of this class. They occupy a border-ground between philosophy and politics; they keep out of the dangers of politics, and at the same time use philosophy as a means of serving their own interests.
Plato quaintly describes them as making two good things, philosophy and politics, a little worse by perverting the objects of both. Men like Antiphon or Lysias would be types of the class. Out of a regard to the respectabilities of life, they are disposed to censure the interest which Socrates takes in the exhibition of the two brothers. They do not understand, any more than Crito, that he is pursuing his vocation of detecting the follies of mankind, which he finds 'not unpleasant.'
(Compare Apol.)
Education is the common subject of all Plato's earlier Dialogues. The concluding remark of Crito, that he has a difficulty in educating his two sons, and the advice of Socrates to him that he should not give up philosophy because he has no faith in philosophers, seems to be a preparation for the more peremptory declaration of the Meno that 'Virtue cannot be taught because there are no teachers.'
The reasons for placing the Euthydemus early in the series are: (1) the similarity in plan and style to the Protagoras, Charmides, and Lysis;--the relation of Socrates to the Sophists is still that of humorous antagonism, not, as in the later Dialogues of Plato, of embittered hatred; and the places and persons have a considerable family likeness; (2) the Euthydemus belongs to the Socratic period in which Socrates is represented as willing to learn, but unable to teach; and in the spirit of Xenophon's Memorabilia, philosophy is defined as 'the knowledge which will make us happy;' (3) we seem to have passed the stage arrived at in the Protagoras, for Socrates is no longer discussing whether virtue can be taught--from this question he is relieved by the ingenuous declaration of the youth Cleinias; and (4) not yet to have reached the point at which he asserts 'that there are no teachers.' Such grounds are precarious, as arguments from style and plan are apt to be (Greek). But no arguments equally strong can be urged in favour of assigning to the Euthydemus any other position in the series.