A Discourse of a Method for the Well Guiding of Reason

In this reproduction of his original publication of 1649, Rene Descartes discusses how seekers of knowledge can best attain true insight of the world around them.

Often referred to as simply the Discourse on the Method, this work is frequently cited as one of the most important to appear during the Enlightenment era. It discusses the ideal means through which those in search of knowledge can approach the world, and the practice of science, as a means of attaining true and definitive insight. The Discourse on Method is influential chiefly for its role in establishing the scientific method; a technique which scientists have used to make valid discoveries over the centuries.  

Descartes instructs the reader to doubt everything, and to use this universal doubt as a starting point from which to approach a problem. In addition to matters of science, Descartes reflects upon his own personal, religious beliefs. In addition to his Method, Descartes also explains certain social and personal notions such as obeying the laws and statutes of his country and prioritizing self-advancement over the achievement of material wealth or fortune.  

Famous for including the much-quoted phrase "Je pense, donc je suis" - "I think, therefore I am" - the Discourse on Method today stands as a crucial cornerstone of countless educational courses on philosophy.