Ancient Greece 500 to 200 BC
Ancient Greece philosophy began with the concepts created by such great figures as Thales, Anaximander, Anaximenes, Pythagoras whose philosophies helped shape great fathers of philosophy such as the Sophist, Socrates, Plato and Aristotle.
Ancient Rome 129 to 216 AD
Claudius Galen was a prominent Roman physician and philosopher of Greek origins and the most famous doctor in the Roman Empire shared the beliefs of Hipocrates about the physiological basis for mental disorders.
Middle Ages - about 446 - 1000 AD
Also called the Dark Ages, this period characterized widespread illiteracy and neglection of science and culture.
The Renaissance - 14th to 17 Century
René Descartes, also