Aristotle (c. 384 B.C. to 322 B.C.) was an Ancient Greek philosopher and scientist who is still considered one of the greatest thinkers in politics, psychology and ethics. When Aristotle turned 17, he enrolled in Plato's Academy. In 335, Aristotle founded his own school, the Lyceum, in Athens, where he spent most of the rest of his life studying, teaching and writing. Some of his most notable works include Nichomachean Ethics , Politics , Metaphysics , Poetics and Prior analytics . In 338, Aristotle began tutoring Alexander the Great. "Knowing yourself is the beginning of all wisdom." - Aristoteles This is the descriptive, concise biography of Aristotle.