Academic philosophers

Plato ( ; Greek: , ; born  BC, died 348/347 BC) was an ancient Greek philosopher of Classical Athens who is most commonly considered the foundational thinker of the Western philosophical tradition. An innovator of the literary dialogue and dialectic forms, Plato influenced all the major areas of theoretical philosophy and practical philosophy, and was the founder of the Academy, a philosophical school in Athens where Plato taught the collection of philosophical theories that would later become known as Platonism.

Xenocrates (; ; c. 396/5314/3 BC) of Chalcedon was a Greek philosopher, mathematician, and leader (scholarch) of the Platonic Academy from 339/8 to 314/3 BC. His teachings followed those of Plato, which he attempted to define more closely, often with mathematical elements. He distinguished three forms of being: the sensible, the intelligible, and a third compounded of the two, to which correspond respectively, sense, intellect and opinion. He considered unity and duality to be gods which rule the universe, and the soul a self-moving number. God pervades all things, and there are daemonical pow

Greek philosopher and astronomer (c.390–c.310 BC)

Speusippus (; ; c. 408 – 339/8 BC) was an ancient Greek philosopher. Speusippus was Plato's nephew by his sister Potone. After Plato's death, c. 348 BC, Speusippus inherited the Academy, near age 60, and remained its head for the next eight years. However, following a stroke, he passed the chair to Xenocrates. Although the successor to Plato in the Academy, Speusippus frequently diverged from Plato's teachings. He rejected Plato's Theory of Forms, and whereas Plato had identified the Good with the ultimate principle, Speusippus maintained that the Good was merely secondary. He also argued that

ancient Greek philosopher

Crantor of Soli (, gen.: Κράντορος; died 276/5 BC) was an Ancient Greek philosopher and member of the Old Academy who was the first philosopher to write commentaries on the works of Plato.

Greek philosopher and scholarch (died 270/269 BC)

3rd-century BC Greek Platonist philosopher

ancient Greek philosopher

ancient Greek philosopher

Hermodorus (), an Ephesian who lived in the 4th century BC, was an original member of Plato's Academy and was present at the death of Socrates. He is said to have circulated the works of Plato (combined Socratic tenets with the Eleaticism of Parmenides), and to have sold them in Sicily. Hermodorus himself appears to have been a philosopher, for we know the titles of two works that were attributed to him: On Plato (), and On Mathematics ().

ancient Greek philosopher