Plutarch of Athens wrote commentaries on what Greek philosopher, whose writings constitute the first comprehensive system of Western philosophy?
Aristotle Aristotle ( ; Greek: Ἀριστοτέλης , , "Aristotélēs"; 384–322 BC) was an ancient Greek philosopher and scientist born in the city of Stagira, Chalkidice, on the northern periphery of Classical Greece. His father, Nicomachus, died when Aristotle was a child, whereafter Proxenus of Atarneus became his guardian. At seventeen or eighteen years of age, he joined Plato's Academy in Athens and remained there until the age of thirty-seven (c. 347 BC). His writings cover many subjects – including physics, 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 II of Macedon, tutored Alexander the Great beginning in 343 BC.
Xenokrates of Sicyon Xenokrates of Athens or of Sicyon (Greek: Ξενοκράτης ; fl. c. 280 BC) was an ancient Greek sculptor and writer, and one of the world's first art historians. Three signed statue bases are all that survive of his work. Pliny the Elder described him as a pupil of either Euthykrates or Teisikrates, and states that he surpassed both in his career, and that he wrote several volumes concerning his craft. Pliny the Elder's entire dissertation on the history of sculpture and painting is believed to have been strongly influenced by the work of Xenokrates. He was the art critic most familiar to the Romans of the late Republic, and he greatly influenced their tastes.