Abstract

A main argument of Descartes' philosophy that we are able to find on Meditations on first Philosophy and Principles of Philosophy is the doubt argument. On the inquiry of first truths, the path of doubt allows us to leave aside the doubtful and makes us perceive the principles with grater evidence, because they resist all doubt. But in his Warnings to the Descartes' general principles, Leibniz criticized this Cartesian point of depart, and then, one of the grounds of Descartes' philosophy. This essay shall be the place of discussion of both philosophers' reasons, not being this a promise for a clear and distinct conclusion.