Library

Aristotle

Aristotle of Stagira (384–322 BC). Philosopher and student of Plato; tutor of Alexander the Great.

• On the Heavens c. 350 BC De Caelo Aristotle’s cosmological treatise. Book I, Part 9 discusses αἰών (“duration”) as the fulfilment of a life and of all time, “a name based upon the fact that it is always.”
• Metaphysics, Book XII c. 350 BC Book XII (Λ) of the Metaphysics: the unmoved mover—the theology that On the Heavens’s cosmology depends on. English by W. D. Ross.