XVIII. It is said also, that he defended Chabrias the general, when he was impeached in a capital charge; when no one else of the citizens would undertake the task: and as he was going up towards the Acropolis with his client, Crobylus the sycophant met him and said, “Are you come to plead for another, not knowing that the hemlock of Socrates is waiting also for you?” But he replied, “And also, when I fought for my country I encountered dangers: and now too I encounter them in the cause of justice and for the defence of a friend.”
XIX. He was the first author who wrote treatises in the form of dialogues, as Phavorinus tells us in the eighth book of his Universal History. And he was also the first person who introduced the analytical method of investigation, which he taught to Leodamus of Thasos. He was also the first person in philosophy who spoke of antipodes, and elements, and dialectics, and actions (ποιήματα), and oblong numbers, and plane surfaces, and the providence of God. He was likewise the first of the philosophers who contradicted the assertion of Lysias, the son of Cephalus, setting it out word for word in his Phædrus. And he was also the first person who examined the subject of grammatical knowledge scientifically. And as he argued against almost every one who had lived before his time, it is often asked why he has never mentioned Democritus.
XX. Neanthes of Cyzicus says, that when he came to the Olympic games all the Greeks who were present turned to look at him: and that it was on that occasion that he held a conversation with Dion, who was on the point of attacking Dionysius. Moreover, in the first book of the Commentaries of Phavorinus, it is related that Mithridates, the Persian, erected a statue of Plato in the Academy, and put on it this inscription, “Mithridates, the son of Rhodobates, a Persian, consecrated an image of Plato to the Muses, which was made by Silanion.”
XXI. And Heraclides says, that even while a young man, he was so modest and well regulated, that he was never once seen to laugh