Note 488 — EPINOMIS.
Reading edition
Plato, Epinom. pp. 980-981. We know, from a curious statement of Xenokrates (see Fragm. of his work Περὶ τοῦ Πλάτωνος βίου, cited by Simplikius, ad Aristot. Physic. p. 427, a. 17, Schol. Brandis), that this quintuple elementary scale was a doctrine of Plato. But it is not the doctrine of the Timæus. The assertion of Xenokrates (good evidence) warrants us in believing that Plato altered his views after the composition of Timæus, and that his latest opinions are represented in the Epinomis. Zeller indeed thinks that the dodekahedron in the Timæus might be construed as a fifth element, but this is scarcely tenable. Zeller, Philos. der Griechen, vol. ii. p. 513, ed. 2nd.