Please cite sources from books directly and LIMIT use of outside sources , I lose points this way. Also be original. make sure to explain the following points thoroughly: a) what is the Cartesian method of doubt, b) Descartes’ emphasis on what is the basis of knowledge, and c) the three theories that he thought he had proven true with certainty. In your discussion of Hume, make sure that you explain the following points: a) what is Hume’s skepticism, b) his empiricist approach to knowledge, and c) the uncertainty of our belief in causality (the theory of cause-effect).