Problem: Throughout this module, you have been asked to read and think about how we know. One of the foundational philosophical works of epistemology is Rene Descartes' Meditations on First Philosophy where he doubts all of his ideas and beliefs in order to gain clarity about what he can know with certainty. In the final paragraph from the reading, Descartes writes "But what then am I? A thing that thinks." (206) How can Descartes be so sure that he is a thing that thinks? What are two or three things that you know with certainty? How do you know those things?