Book 5
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Heraclides, son of Euthyphro, born at Heraclea in the Pontus, was a wealthy man. At Athens he first attached himself to Speusippus. He also attended the lectures of the Pythagoreans and admired the writings of Plato. Last of all he became a pupil of Aristotle, as Sotion says in his Successions of Philosophers.That Heraclides was a member of the Academy is established beyond all doubt by the fact that he was a candidate for the headship of the School on the death of Speusippus: Index Acad. p. 38 Mekler. However, not only does Diogenes Laertius make him, on Sotion’s authority, a pupil of Aristotle, but Aëtius also seems, iii. 2. 5, to associate him with the Peripatetics (καθάπερ ἀμέλει πάντες οἱ Περιπατητικοί). He wore fine soft clothes, and he was extremely corpulent, which made the Athenians call him Pompicus rather than Ponticus. He was mild and dignified of aspect. Works by him survive of great beauty and excellence. There are ethical dialogues: Of Justice, three books. Of Temperance, one book. Of Piety, five books. Of Courage, one book. Of Virtue in general, one book. A second with the same title. Of Happiness, one book.
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Of Government, one book. On Laws, one book, and on subjects kindred to these. Of Names, one book. Agreements, one book. On the Involuntary, one book. Concerning Love, and Clinias, one book.
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Others are physical treatises: Of Reason. Of the Soul, and a separate treatise with the same title. Of Nature. Of Images. Against Democritus. Of Celestial Phenomena, one book Of Things in the Under-world. On Various Ways of Life, two books. The Causes of Diseases, one book. Of the Good, one book. Against Zeno’s Doctrines, one book. A Reply to Metron’s Doctrines, one book.
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To grammar and criticism belong: Of the Age of Homer and Hesiod, two books Of Archilochus and Homer, two books.
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Of a literary nature are: A work on passages in Euripides and Sophocles, three books. On Music, two books.
