Callippus sentence example
- At the same time, he must have learnt much from other contemporaries at Athens, especially from astronomers such as Eudoxus and Callippus, and from orators such as Isocrates and Demosthenes.
- Similarly in astronomy, Aristotle used the assistance of Eudoxus and Callippus.
- Plato and Speusippus in the Ethics, Eudoxus and Callippus in the Metaphysics, he was writing these passages after the deaths of these persons; but he might have been also writing the Ethics and the Metaphysics both beforehand and afterwards.
- The Eudoxian or " homocentric " system, after it had been further elaborated by Callippus and Aristotle, was modified by Apollonius of Perga (fl.