says Timon in his Satirical Poems, on account of his quitting physics for ethics. Antisthenes, after being a pupil of Socrates, introduced the Cynic philosophy; and Plato withdrew to the Academy. Aristotle, after studying philosophy under Plato, withdrew to the Lyceum, and founded the Peripatetic sect. He was succeeded by Theophrastus, who was succeeded by Strato, and he by Lycon, then Critolaus, and then Diodorus. Speusippus was the successor of Plato; his successor was Xenocrates; and the successor of the latter, Polemo. And the disciples of Polemo were Crates and Crantor, in whom the old Academy founded by Plato ceased. Arcesilaus was the associate of Crantor; from whom, down to Hegesilaus, the Middle Academy flourished. Then Carneades succeeded Hegesilaus, and others came in succession. The disciple of Crates was Zeno of Citium, the founder of the Stoic sect. He was succeeded by Cleanthes; and the latter by Chrysippus, and others after him. Xenophanes of Colophon was the founder of the Eleatic school, who, Timæus says, lived in the time of Hiero, lord of Sicily, and Epicharmus the poet; and Apollodorus says that he was born in the fortieth Olympiad, and reached to the times of Darius and Cyrus. Parmenides, accordingly, was the disciple of Xenophanes, and Zeno of him; then came Leucippus,