Plato By Diogenes Laertius 3rd Century AD

Diogenes Laërtius wrote Lives and Opinions of Eminent Philosophers in Greek between 200-300 AD. His work has been organized into nine books starting with Thales and ending with Epicurus. Plato constitutes the whole of the third book. It was translated in Latin in 1472. Despite the varying reliability of Laertius' accounts, his book has become a principal source for the history of Greek philosophy, since many of the earlier sources on which it was based are no longer extant.