In this essay, I will examine Rene Descartes' skeptical argument and responses by O.K. Bouwsma and Norman Malcolm. I intend to prove that while both Bouwsma and Malcolm make points that refute specific parts of Descartes' argument in their criticisms, neither is sufficient in itself to refute the whole. In order to understand Descartes' argument and its sometimes radical ideas, one must have at least a general idea of his motives in undertaking the argument. The seventeenth century was a time of great scientific progress, and the blosso ....