The epistemology of memory is a neglected topic in philosophy, but memory plays an essential role in almost all of our knowledge-almost all of what you now know consists of things that you learned before now and that you presently remember-for instance, who Abraham Lincoln was, what is the product of 7 and 4, and what the beginning of this sentence was about. Epistemological questions about memory (as distinct from psychological questions) include the likes of “How do we know that the events we seem to remember actually happened?” and “What sort of justification do we have for believing p when we ‘remember that p’?”