Plato
The Greek philosopher Plato (428-347 BC) was among the most important and creative thinkers of the ancient world. His work set forth most of the important problems and concepts of Western philosophy, psychology, logic, and politics, and his influence has remained profound from ancient to modern times. Plato was born in Athens in 428 BC. Both his parents were of distinguished Athenian families, and his stepfather, an associate of Pericles, was an active participant in the political and cultural life of Periclean Athens. Plato seems as a young man to have been destined for an aristocratic political career. The excesses of Athenian political life, however, both under the oligarchical rule of the so-called Thirty Tyrants and under the restored democracy, seem to have led him to give up these ambitions. In particular, the execution of Socrates had a profound effect on his plans. The older philosopher was a close friend of Platos family, and Platos writings attest to Socrates great influence on him. After Socrates death Plato retired from active Athenian life and traveled widely for a number of years. In 388 BC he journeyed to Italy and Sicily, where he became the friend of Dionysius the Elder, ruler of
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