Memorabilia says that the Arcadians and Thebans, when they were founding Megalopolis, invited Plato to be their legislator ; but that, when he discovered that they were opposed to equality of possessions, he refused to go. There is a story that he pleaded for Chabrias the general when he was tried for his life, although no one else at Athens would do so, and that, on this occasion, as he was going up to the Acropolis along with Chabrias, Crobylus the informer met him and said, “ What, are you come to speak for the defence ? Don’t you know that the hemlock of Socrates awaits you?” To this Plato replied, “ As I faced dangers when serving in the cause of my country, so I will face them now in the cause of duty for a friend.” He was the first to introduce argument by means of question and answer, says Favorinus in the eighth book of his Miscellaneous History ; he was the first to explain to Leodamas of Thasos the method of solving problems by analysis®; and the first who in philosophical discussion employed the terms antipodes, element, dialectic, quality, oblong number, and, among boundaries, the plane superficies ; also divine providence. He was also the first philosopher who controverted the speech of Lysias, the son of Cephalus, which he has set out word for word in the Phaedrus,¢ and the first to study the significance of grammar. And, as he was the first to attack the views of almost all his predecessors, the question is raised why he makes no mention of Democritus. Neanthes of Cyzicus says that, on his going to Olympia, the eyes of all