Psychology

-Aristotle -
De Anima, first book to treat psychology as a systematic philosophy. Developed notions about the psyche. Founded philosophical psychology. Studied with Plato 20 years. After Plato's nephew, Speusippus, is named the head of the Academy, Aristotle leaves Athens, but later returns, to found his own school, the Lyceum, in 335 BC. Although he, too, wrote philosophical dialogues, only a few fragments have come down to us. His surviving writings exist in the form of treatises. Was considered the father of modern scientific thought, he was also Alexander's tutor.

Aristotle was the greatest systematic philosopher of antiquity. He was the first to philosophise on the basis of science. Because of his great knowledge, especially in the physical sciences, he became known in history as a "panepistimon" or man of all sciences. Aristotle developed the dialectical method in logic, not in the Socratic sense of the dialogue but as a process consisting of thesis, antithesis and synthesis, which then becomes the new thesis.