The central project of this class is to inquire into the scope and limits of human knowledge. What can we know, if anything? How should we define "knowledge"? We will begin by thinking about philosophical skepticism and related attempts to define knowledge. Then, we shall turn to epistemological issues concerning perception. Following this, we will ask methodological questions about epistemology and analytic philosophy more generally, such as whether epistemology should become a branch of cognitive science, and whether attempts to define ordinary language concepts, like "knowledge", will ever succeed.