Diogenes Laertius Vitae philosophorum 9.1.15

[15] Demetrius, in his book on Men of the Same Name, says that he despised even the Athenians, although held by them in the highest estimation; and, notwithstanding that the Ephesians thought little of him, he preferred his own home the more. Demetrius of Phalerum, too, mentions him in his Defence of Socrates ¹ ; and the commentators on his work are very numerous, including as they do Antishenes and Heraclides of Pontus, Cleanthes and Sphaerus the Stoic, and again Pausanias who was called the imitator of Heraclitus, Nicomedes, Dionysius, and, among the grammarians, Diodotus. The latter affirms that it is not a treatise upon nature, but upon government, the physical part serving merely for illustration. ²