Recently, new life has been breathed into the ancient philosophical topic of scepticism. It has been the subject of some of the best and most provocative work in contemporary philosophy by both today's top epistemologists and also by the world's leading philosophers working in other areas of the discipline. This book collects the most important contributions to each of the major approaches to scepticism that have dominated the recent discussion. It features essays by Anthony Brueckner, Keith DeRose, Fred Dretske, Graeme Forbes, Christopher Hill, David Lewis, Thomas Nagel, Robert Nozick, Hilary Putnam, Ernest Sosa, Gail Stine, Barry Stroud, Peter Unger, and Ted Warfield,