Discourse on the Method of Rightly Conducting the Reason and Seeking Truth in the Sciences: Rene Descartes

The Discourse on Method is best known as the source of the famous quotation "cogito ergo sum", "I think, therefore I am." In addition, it contains Descartes' first introduction of the Cartesian coordinate system. This is one of the most influential works in history. It is a method which gives a solid platform from which all modern natural sciences could evolve. With this work, the idea of skepticism was revived from the ancients such as Sextus Empiricus and modified to account for a truth that Descartes found to be incontrovertible. Descartes started his line of reasoning by doubting everything, so as to assess the world from a fresh perspective, clear of any preconceived notions.