- Life
- c. 428/427 BC — c. 348/347 BC
- Country
- Ancient Greece
- Period
- Classical antiquity
- School
- Platonism
- Affiliation
- The Academy, Athens
- Areas
- Metaphysics, Epistemology, Ethics, Political philosophy, Aesthetics, Philosophy of language
- Major works
- Apology, Crito, Euthyphro, Protagoras and Gorgias (early dialogues, c. 399–387 BC)
- Meno, Phaedo, Symposium and Republic (middle dialogues, c. 385–370 BC)
- Parmenides, Theaetetus, Sophist and Philebus (late dialogues, c. 370–355 BC)
- Timaeus and Critias (c. 360 BC)
- Laws (unfinished at his death, c. 348 BC)
- Key concepts
- The theory of Forms, The Form of the Good, Anamnesis, The tripartite soul, The philosopher-ruler, The allegory of the cave, Dialectic
- Influenced by
- Socrates, Parmenides, Heraclitus, the Pythagoreans
- Influenced
- Aristotle, Plotinus, Augustine, the Neoplatonic tradition, Alfred North Whitehead