Discourse on the Method of Rightly Conducting One's Reason and of Seeking Truth in the Sciences

"Discourse on the Method of Rightly Conducting One's Reason and of Seeking Truth in the Sciences" is a philosophical and autobiographical treatise by one of the greatest philosophers of all times, René Descartes. It was created in 1637. The treatise is best known as the source of the famous quotation «Je pense, donc je suis,» meaning «I think, therefore I exist.»