Descartes’ Meditations is a discussion of metaphysics, or what is really real. In these writings, he ultimately hopes to achieve absolute certainty about the nature of everything including God, the physical world, and himself. It is only with a clear and distinct knowledge of such things that he can then begin understand his true reality. In order to acquire absolutely certainty, Descartes must first lay a complete foundation of integrity on which to build up his knowledge. The technique he uses to lay this base is doubt. If any belief ....