aristotle moved to athens in 367 bc and began to study philosophy. he studied at plato's academy. he left athens twenty years later to study botany and zoology. he became a teacher of alexander the great and returned to athens ten years later to create his own school: the lyceum. at least twenty-nine of his books have survived, known as the "corpus aristotelicum." he wrote about logic, physics, optics, metaphysics, ethics, rhetoric, politics, poetry, botany, and zoology.