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Greek mathematician whose works, and the style in which they were presented, formed the basis for all mathematical thought and expression for the following 2,000 years (although they were not entirely without fault).
Greek philosopher of Athens. Famous for his view of philosophy as a pursuit proper and necessary to all intelligent men, he is one of the great examples of a man who lived by his principles even though they ultimately cost him his life.
Greek philosopher, b. Samos; son of an Athenian colonist. He claimed to be self-taught, although tradition states that he was schooled in the systems of Plato and Democritus by his father and various philosophers.