Stanford Encyclopedia of Philosophy: Aristotle's Theory

Looks at the life of Aristotle (384-322 B.C.E.) and the far-reaching scope of his intellectual ideas. The article examines in depth his theories in the disciplines of philosophy, politics, mathematics and science, and his legacy.

Encyclopedia article about Pythagoras from the Stanford Encyclopedia of Philosophy that discusses not only his life, but his major contributions as well. Also includes a lengthy bibliography and links to additional information.

Describes the Stoic philosophies and beliefs about theology, fate, and elemental theory.

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Lengthy discussion of Aristotle's theory of motion, its presentation by Aquinas, and its relation to Zeno's paradoxes.

Looks at the life of Aristotle and his work in the field of biology. His different theories are explained, and the ideas he got right as well as some he got wrong.

Excellent article from the Stanford Encyclopedia of Philosophy tracing the development of "divine illumination" throughout the classical and medieval Christian philosophical tradition. Describes how this distinctively Christian...

Thorough explanation of Aristotle's several original contributions to logic from the Stanford Encyclopedia of Philosophy. Includes a substantial bibliography as well as sections on syllogism, assertion, demonstration, the "Organon,"...

This is a very detailed site about the life and the works of Saint Thomas Aquinas (1225-1274 CE). This site provides the reader with a brief biography, comparisons between Aristotle and Aquinas, commentary on Aquinas' work, and also a...

Discusses the life of Anaxagoras of Clazomenae, his ideas about the metaphysical, the physical, the cosmos, and human intelligence, and the impact he had on later intellectuals. He is especially remembered for having been the first to...