| In the history of art, the original Greek authorities are Duris of Samos, Xenocrates of Sicyon, and Antigonus of Carystus. |
| Xenocrates says that the stars are moved in one and the same superficies. |
| Plato advised Xenocrates, a man rather austere but in all other respects a fine fellow, to sacrifice to the Graces. |
| A reference, in part, to Aristotle, who for three years lived and taught in Assos with Erastus and Xenocrates. |
| Aristotle then accompanied Xenocrates to the court of his friend Hermias of Atarneus in Asia Minor. |
| Plutarch writes about an attempt by Xenocrates to calculate the total number of syllables which could be made from the letters of the alphabet. |
