One Homer but many Socrateses.\xa0 Early, Middle, and Late Dialogues, plus Xenophon.\xa0 Ordering of the dialogues, ordering of Socrates's life.\xa0 Mention of the Parmenides, purported to have occurred about a century before Plato wrote it.\xa0 Zeno's paradoxes.\xa0 Galileo's.\xa0 Diogenes the Cynic's refutation of Zeno. Quick exposition of the Forms or Ideas.