Paul O'Grady clearly distinguishes five main kinds: relativism about truth, relativism about logic, ontological relativism, epistemological relativism, and, finally, relativism about rationality. In each case he shows what makes a position relativist and how it differs from a sceptical or pluralist position. He ends by presenting a thoroughly integrated position that rejects some forms while defending others. The book includes discussion of recent work by Putnam, Devitt, Searle, Priest, and Quine and offers a succinct survey of contemporary debates. This lively discussion of the issue will be welcome reading for all those involved in philosophical inquiry.