"To this question he gave no reply; but shortly after he gave a convulsive movement, and the man covered him, and his eyes were fixed, and Crito, perceiving it, closed his mouth and eyes. "This, Echecrates, was the end of our friend, a man, as we may say, the best of all of his time that we have known, and moreover, the most wise and just." Our knowledge of the teaching of Socrates is derived chiefly from two sources, Plato and Xenophon, for the peculiarities of each of whom allowances must be made. Plato in his dialogues makes Socrates the mouthpiece of his own teaching, consequently the majority of the tenets to which Socrates is made to give expression are purely Platonic doctrines of which the historical Socrates could never even have dreamed. It might, therefore, seem at first sight that there is no possibility of ascertaining from Plato's dialogues any trustworthy account of the ideas of Socrates. But on closer inspection this does not turn out to be correct, because the earlier dialogues of Plato were written before he had developed his own philosophy, and when he was, to all intents and purposes, simply a disciple of Socrates, bent only upon giving the best expression to the Socratic doctrine. Even in these Socratic dialogues, however, we have what is no doubt an idealized portrait of Socrates. Plato makes no pretence of being merely a biographer or historian. The incidents and conversation, although they are no doubt frequently founded upon facts, are, in the {142} main, imaginary. All we can say is that they contain the gist and substance of the philosophy of Socrates. The other source, Xenophon, also has his peculiarities. If Plato was an idealizing philosopher, Xenophon was a prosaic and matter of fact man of affairs. He was a plain, honest soldier. He had no great insight into any philosophy, Socratic or otherwise. He was not attached to Socrates primarily as a philosopher, but as an admirer of his character and personality. If Plato puts the teaching of Socrates too high, Xenophon puts it too low. But, in spite of this, Xenophon's Memorabilia contains a mass of valuable information both about the life and the philosophical ideas of Socrates.