Plato (c. 428–348 BC), born into an aristocratic Athenian family, was the most important student of Socrates and the teacher of Aristotle—together they form the trio of greatest ancient Greek philosophers. He founded the Academy in Athens, the first institution of higher learning in the Western world.
Plato proposed the influential Theory of Forms, arguing that the physical world we perceive is merely a shadow of a higher realm of perfect, eternal Forms. His masterwork The Republic explored justice, ideal governance, and the concept of philosopher-kings, becoming a foundational text of Western political philosophy.
Plato's philosophical system profoundly shaped Neoplatonism, Christian theology, and the entire Western intellectual tradition. Alfred North Whitehead famously remarked that 'the safest general characterization of the European philosophical tradition is that it consists of a series of footnotes to Plato.'
