De Anima (On the Soul)

Aristotle was born at Stageira, in the dominion of the kings of Macedonia, in 384 BCE. For 20 years he studied at Athens in the Academy of Plato, on whose death in 347 he left, and, sometime later, became tutor of the young Alexander the Great. When Alexander succeeded to the throne of Macedonia in 335, Aristotle returned to Athens and established his school and research institute, the Lyceum, to which his great erudition attracted a large number of scholars. After Alexander's death in 323, anti-Macedonian feeling drove Aristotle out of Athens, and he fled to Chalcis in Euboea, where he died in 322. His writings, which were of extraordinary range, profoundly affected the whole course of ancient and medieval philosophy,…