Many scholars say that Alexander the Great was one of the most egnimatic personalities of all time, and he was lucky enough to get Aristotle as a teacher..............Socrates had Plato...............both predated Aristotle and Alexander......but not by too much.......

Aristotle (/ˈærɪˌstɒtəl/;^[1] Greek: Ἀριστοτέλης [aristotélɛːs], Aristotélēs; 384–322 BCE)^[2] was a Greek philosopher and scientist born in Stagira of Chalkidiki, next to theMacedonian Kingdom in the north part of the Greek world. His father, Nicomachus, died when Aristotle was a child, whereafter Proxenus of Atarneus became his guardian.^[3] At eighteen, he joined Plato's Academy in Athens and remained there until the age of thirty-seven (c. 347 BCE). His writings cover many subjects – includingphysics, biology, zoology, metaphysics, logic, ethics, aesthetics, poetry, theater, music, rhetoric, linguistics, politics and government – and 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 343 BCE.^[4] According to the Encyclopædia Britannica, "Aristotle was the first genuine scientist in history ... [and] every scientist is in his debt."^[5]

Teaching Alexander the Great gave Aristotle many opportunities and an abundance of supplies. He established a library in the Lyceum which aided in the production of many of his hundreds of books. The fact that Aristotle was a pupil of Plato contributed to his former views of Platonism, but, following Plato's death, Aristotle immersed himself in empirical studies and shifted from Platonism to empiricism.^[6] He believed all peoples' concepts and all of their knowledge was ultimately based on perception. Aristotle's views on natural sciences represent the groundwork underlying many of his works.