428? BC – Born in Athens, or Aegina, Greece, the son of Ariston and Perictione. An ancient Greek philosopher, the second of the great trio of ancient Greeks—Socrates, Plato, and Aristotle—who between them laid the philosophical foundations of Western culture.
399 BC – The democracy condemned Socrates to death, and Plato and other Socratic men took temporary refuge at Megara with Eucleides, founder of the Megarian school of philosophy.
388 BC – Plato states that he visited Italy and Sicily at the age of 40 and was disgusted by the gross sensuality of life there but found a kindred spirit in Dion, brother-in-law of Dionysius I, the ruler of Syracuse.
387 – Plato founded the Academy as an institute for the systematic pursuit of philosophical and scientific teaching and research. He presided over it for the rest of his life.
361-360 BC – Plato later paid a second and longer visit to Syracuse, still in the hope of effecting an accommodation; but he failed, not without some personal danger.
348? BC – He died in Athens.