420s BC births

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.

The 11th Achaemenid Emperor (358–338 BC)

4th century BC Greek philosopher

Ateas (ca. 429 BC – 339 BC) was described in Greek and Roman sources as the most powerful king of Scythia, who lost his life and empire in the conflict with Philip II of Macedon in 339 BC. His name also occurs as Atheas, Ateia, Ataias, and Ateus.

Thessalian mercenary general (c.423–c.400 BC)