Aristotle (b. 384 - d. 322 BC), was a Greek philosopher, logician, and scientist. Along with his teacher Plato, Aristotle is generally regarded as one of the most influential ancient thinkers in a number of philosophical fields, including political theory. Aristotle's' writing reflects his time, background and beliefs. Aristotle was born at Stagira, in Macedonia. His father, Nichomacus, was the personal physician to the King of Macedonia, Amyntas. At the age of seventeen, Aristotle left for Athens to study at Plato's Academy. He studied at the Academy for about twenty years, up until Plato's death. Plato's death sent Aristotle to a city in Asia Minor, called Assos, where his friend, Hermias was ruler(Encarta). It was in Assos where Aristotle met, Pythias, who is described as either a niece or daughter of Hermias, who Aristotle married after the murder of Hermias, by the Persians. Aristotle then went to Pella, the capitol of Macedonia, where he became the tutor for the king's son, Alexander, who later became Alexander the Great.
When Alexander became King, Aristotle went to Athens where he began to lecture at the Lyceum. He lectured while walking about in one of its covered walkways, earning him the nickname Peripatetic", which means walking about. Aristotle lectured and directed the Lyceum for twelve years, producing during this time the lecture notes which now form his works. Only a small amount of Aristotle's works have survived. The writings which did survive like: "Metaphysics,." which were his writings on the nature, scope, and properties of being; and "Physics," his writings on astronomy, meteorology, plants, and animals, these writings have changed the way we think and live. Aristotle's works encompassed all the major areas of thought: logic, science, metaphysics, ethics, and politics. He developed a new, non-Platonic theory of form,