This site provides a brief biography and intro into the life of existentialist philosopher Martin Heidegger. Provided are numerous links to text documents of his works and philosophies.

The official site of the Nobel Prize. Their excellent biography of Sartre with looks into his works and philosophy.

The life, philosophy and metaphysics of Aristotle (384-322 BCE) are surveyed. The aim of Aristotle's logical treatises (known as the Organon) was to develop a universal method of reasoning by means of which it would be possible to learn...

Detailed introduction to the life and philosophy of Aristotle. Includes helpful outline of his system and an excellent chart comparing his virtues. A great place to start.

At this site from the Galileo Project of Rice University, you can view factual information about Locke's life. Written in lists; easy to read. Includes categories such as nationality, education, religion, scientific disciplines, and...

Wonderful essay on Socrates refutation of the Sophists. Discusses Socrates' debate with Protagoras over the meaning of "arete" (justice) and its consequences for the democratic politics of Athens.

View Plato's dialogues organized into a system of seven tetralogies - meaning that each is composed of four dialogues or discourses. Includes links for further information on each. Great starting place for learning more about Plato and...