In this course, we read the greatest hits of twentieth century analytic philosophy. Our goal is to understand how and why these papers changed the world, philosophically speaking. In particular, we follow each classic text with chasers from contemporary philosophy. For instance, we read Quine's "Two Dogmas of Empiricism" and then talk about how notions of analyticity are relevant to modern two-dimensionalist frameworks by Stalnaker and Chalmers. We read Frege's "On Sense and Reference" and then talk about recent work on hyperintensionality by linguists such as Geurts and Heim. And we read Gettier's "Is Justified True Belief Knowledge?" and then talk about recent work by Williamson on whether knowledge can in fact be analyzed. Requirements include extensive careful reading, problem sets, a midterm paper, and a paper due at the end of the academic term.