Socrates (c. 469/470 BC - 399 BC), was a Classical Greek philosopher. Considered one of the founders of Western philosophy, he strongly influenced Plato, who was his student, and Aristotle, whom Plato taught. Indeed much contemporary understanding of Socrates' life and work stems from Plato's dialogues.

Principally renowned for his contribution to the field of ethics, Socrates also lends his name to the concepts of Socratic irony and the Socratic Method, or elenchus. The latter remains a commonly used tool in a wide range of discussions, and is a type of pedagogy in which a series of questions are asked not only to draw individual answers, but to encourage fundamental insight into the issue at hand.

Socrates also made important and lasting contributions to the fields of epistemology and logic, and the influence of his ideas and approach remains strong in providing a foundation for much western philosophy which followed.

Details about Socrates derive from three contemporary sources: the dialogues of Plato and Xenophon (both devotees of Socrates), and the plays of Aristophanes. He has been depicted by some scholars, including Eric Havelock and Walter Ong, as a champion of oral modes of communication, standing up at the dawn of writing against its haphazard diffusion.

Socrates lived during the time of the transition from the height of the Athenian hegemony to its decline with the defeat by Sparta and its allies in the Peloponnesian War. At a time when Athens sought to stabilize and recover from its humiliating defeat, the Athenian public may have been entertaining doubts about democracy as an efficient form of government. Socrates appears to have been a critic of democracy, and some scholars interpret his trial as an expression of political infighting.

Despite claiming death-defying loyalty to his city, Socrates' pursuit of virtue and his strict adherence to truth clashed with the current course of Athenian politics and society. He praises Sparta, archrival to Athens, directly and indirectly in various dialogues. But perhaps the most historically accurate of Socrates' offenses to the city was his position as a social and moral critic. Rather than upholding a status quo and accepting the development of immorality within his region, Socrates worked to undermine the collective notion of "might makes right" so common to Greece during this period. Plato refers to Socrates as the "gadfly" of the state (as the gadfly stings the horse into action, so Socrates stung Athens), insofar as he irritated the establishment with considerations of justice and the pursuit of goodness. His attempts to improve the Athenians' sense of justice may have been the source of his execution.

Socrates often said his wisdom was limited to an awareness of his own ignorance. Socrates believed wrongdoing was a consequence of ignorance and those who did wrong knew no better. The one thing Socrates consistently claimed to have knowledge of was "the art of love" which he connected with the concept of "the love of wisdom", i.e. philosophy. He never actually claimed to be wise, only to understand the path a lover of wisdom must take in pursuing it. It is debatable whether Socrates believed humans (as opposed to gods like Apollo) could actually become wise.

Socrates believed the best way for people to live was to focus on self-development rather than the pursuit of material wealth. He always invited others to try to concentrate more on friendships and a sense of true community, for Socrates felt this was the best way for people to grow together as a populace. His actions lived up to this: in the end, Socrates accepted his death sentence when most thought he would simply leave Athens, as he felt he could not run away from or go against the will of his community.

The idea that humans possessed certain virtues formed a common thread in Socrates' teachings. These virtues represented the most important qualities for a person to have, foremost of which were the philosophical or intellectual virtues. Socrates stressed that "virtue was the most valuable of all possessions; the ideal life was spent in search of the Good. Truth lies beneath the shadows of existence, and it is the job of the philosopher to show the rest how little they really know."

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