Plato and the Historical Context of Ancient Greek Philosophy

The Classical Period of Ancient Greece

Plato belongs to the Classical period of ancient Greece, a time defined by a series of poleis (city-states) with distinct lifestyles and political regimes. Notable examples include Sparta, an oligarchy, and Athens, which possessed a democratic constitution.

At the beginning of the 5th century BC, the Persians invaded Ionia, threatening the entire region. The Greek cities, led by Athens and Sparta, defeated the Persian army in the Greco-Persian Wars. This victory led to the creation of the Delian League, headed by Athens, which became the cultural and political capital of antiquity. However, Athens aroused the suspicion of rival city-states, including Sparta, which declared war. The resulting Peloponnesian War ended in victory for Sparta. Plato was born in the middle of this conflict and witnessed the decline of his city.

Political Turmoil and the Death of Socrates

In Athens, governments alternated between oligarchs and democrats. Under a democratic government, a jury of 500 citizens sentenced Socrates, Plato's teacher, to death. Although Plato was of noble birth and initially prepared to share power with the oligarchy, he resigned from active politics following these events. These historical circumstances explain two key factors in Plato's philosophy: his conviction that a new form of government was necessary and his sympathy toward Sparta.

This era also saw the rise of great playwrights, including Aeschylus, Sophocles, and Euripides, whose works addressed philosophical issues and questioned the nature of the gods.

Philosophical Influences on Plato

Plato studied under Cratylus, a disciple of Heraclitus, and various sophists, but the most significant event of his life was his meeting with Socrates. Plato traveled to Megara, Egypt, Cyrene, and Magna Graecia, where he encountered the Eleatics and the Pythagoreans, who left a deep imprint on his thinking.

• Socrates: Influenced Plato’s belief that there is an objective truth that is knowable and teachable, and that the central purpose of politics is to educate men to be just.
• Cratylus: Taught Plato that nothing is permanent in the sensible world and that the senses are incapable of reaching stable truth.
• Pythagoreans: Provided the theory of the soul, the transmigration of the soul, and the importance of mathematics in achieving full knowledge.
• Parmenides: Influenced the concept that all change is illusory.