"Aristotle" was a Greeks/Greek philosopher and scientist born in the Macedonia (ancient kingdom)/Macedonian city of Stagira (ancient city)/Stagira, Chalkidiki/Chalkidice, on the northern periphery of Classical Greece. His father, Nicomachus (father of Aristotle)/Nicomachus, died when Aristotle was a child, whereafter Proxenus of Atarneus became his guardian. At eighteen, he joined Plato's Academy in Athens and remained there until the age of thirty-seven (Circa/c. ). His writings cover many subjectsand constitute the first comprehensive system of Western philosophy. Shortly after Plato died, Aristotle left Athens and, at the request of Philip of Macedon, tutored Alexander the Great starting from . According to the Encyclopædia Britannica, "Aristotle was the first genuine scientist in history ... [and] every scientist is in his debt."If you enjoy these quotes, be sure to check out other famous philosophers! More Aristotle on Wikipedia.