Others, including Alexamenos of Teos (Aristotle passim), Simon (D. Such a claim, at any rate, is hardly established simply by the existence of these other writers and their writings.
In spite of the confusion, the dates of Plato's life we gave above, which are based upon Eratosthenes' calculations, have traditionally been accepted as accurate. According to Diogenes, whose testimony is notoriously unreliable, Plato's parents were Ariston and Perictione (or Potone—see D. While he stayed in Syracuse, he became the instructor to Dion, brother-in-law of the tyrant Dionysius I. The first of Plato's remaining two Sicilian adventures came after Dionysius I died and his young son, Dionysius II, ascended to the throne. Dionysius then summoned Plato, but wished for Dion to wait a while longer.The question has led to a number of seemingly irresolvable scholarly disputes.At least one important ancient source, Aristotle, suggests that at least some of the doctrines Plato puts into the mouth of the "Socrates" of the "early" or "Socrates" dialogues are the very ones espoused by the historical Socrates.Plato, perhaps now completely disgusted with politics, returned to his beloved Academy, where he lived out the last thirteen years of his life. His grave, however, has not yet been discovered by archeological investigations. There can be no doubt that Plato was also strongly influenced by Parmenides and Zeno (both of Elea), in Plato's theory of the Forms, which are plainly intended to satisfy the Parmenidean requirement of metaphysical unity and stability in knowable reality.According to Diogenes, Plato was buried at the school he founded (D. Aristotle and Diogenes agree that Plato had some early association with either the philosophy of Heraclitus of Ephesus, or with one or more of that philosopher's followers (see Aristotle Metaph. Parmenides and Zeno also appear as characters in his dialogue, the He mixed together in his works the arguments of Heracleitus, the Pythagoreans, and Socrates. 3.8) A little later, Diogenes makes a series of comparisons intended to show how much Plato owed to the comic poet, Epicharmus (3.9-3.17).