Medieval Elements in Descartes  
   Part of lecture notes to a course on Later Medieval Philosophy by John Kilcullen at Macquarie University.
   http://www.humanities.mq.edu.au/Ockham/z3611.html

Descartes' Epistemology  
   Article by Lex Newman from the Stanford Encyclopedia.
   http://plato.stanford.edu/entries/descartes-epistemology/

Internet Encyclopedia of Philosophy: Rene Descartes  
   Entry on Descartes from the Encyclopedia. Includes an assessment of his philosophy.
   http://www.utm.edu/research/iep/d/descarte.htm

Epistemology and Descartes  
   Class notes by Stephen Daniel, Texas A&M University.
   http://www-phil.tamu.edu/~sdaniel/Notes/96class15.html

Philosophy Pages: Descartes  
   A brief discussion of the life and works of Rene Descartes, with links to electronic texts and additional information by Garth Kemerling.
   http://www.philosophypages.com/ph/desc.htm

Descartes Directory  
   Web directory of René Descartes, from projectlinks.org.
   http://www.projectlinks.org/descartes/

The Philosophy of René Descartes  
   An overview of the significance of Descartes' philosophy.
   http://radicalacademy.com/phildescartes1.htm

Descartes' Modal Metaphysics  
   Interpretations of René Descartes' ontology of necessities and possibilities; from the Stanford Encyclopedia by David Cunning.
   http://plato.stanford.edu/entries/descartes-modal/

Descartes' Ontological Argument  
   Discussion of René Descartes ontological proof of the existence of God; by Lawrence Nolan.
   http://plato.stanford.edu/entries/descartes-ontological/

PhilosophyClassics.com: René Descartes  
   A biographical essay, some links and resources, and a sectionalized etext of his Discourse on the Method.
   http://www.philosophyclassics.com/philosophers/Descartes/

The Scientific Methods of René Descartes and Francis Bacon  
   Descartes' rationalism and Bacon's empiricism had to be combined to produce the modern scientific method.
   http://www.thingsrevealed.net/dscrtbacn.htm

René Descartes  
   A brief and useful overview of Descartes' life and thinking on Wikipedia.
   http://en.wikipedia.org/wiki/Ren%E9_Descartes

Descartes, René (1596–1650)  
   Biography, method, philosophy and heritage. Routledge Encyclopedia of Philosophy.
   http://www.rep.routledge.com/article/DA026