Who was Aristotle?

The son of a physician to  the royal family of Macedon, Aristotle was born in Stagira, Chalcidice, in the northeast of modern Greece. He was sent to Athens at 17 to study with Plato at the Academy, and remained there until Plato’s death 20 years later. Surprisingly, Aristotle was not appointed Plato’s successor to lead the Academy. He moved to Ionia, where he made a study of wildlife, until he was invited by Philip of Macedon to be tutor to the young Alexander the Great. Aristotle returned to Athens in 335 BCE to establish a rival school to the Academy, at the Lyceum. While teaching there, he formalized his ideas on the sciences, philosophy, and politics, compiling a large volume of writings, of which few have survived. After the death of Alexander in 323 BCE, anti-Macedonian feeling in Athens prompted him to leave the city for Euboea, where he died the following year.