Hippolytus

“ His Philosophy Reproduced by Plato.
Socrates, then, was a hearer of Archelaus, the natural philosopher; and he, reverencing the rule, “Know thyself,” and having assembled a large school, had Plato (there) , who was far superior to all his pupils. (Socrates) himself left no writings [1] after him. Plato, however, taking notes [2] of all his (lectures on) wisdom, established a school, combining together natural, ethical, (and) logical (philosophy) . But the points Plato determined are these following. ”