René Descartes

In the treatise Passions of the Soul, the last of Descartes' published work, completed in 1649 and dedicated to Princess Elisabeth of Bohemia, the author contributes to a long tradition of theorizing "the passions". The passions were experiences now commonly called emotions in the modern period, and had been a subject …

The Discourse on the Method is a philosophical and autobiographical treatise published by René Descartes in 1637. Its full name is Discourse on the Method of Rightly Conducting One's Reason and of Seeking Truth in the Sciences. The Discourse on The Method is best known as the source of the famous quotation "Je pense, …