Exceptionally well-argued... Williams's Unnatural Doubts is a major contribution to epistemology--or, rather, to the discussion of the possibility of epistemology. It includes some excellent discussions of Nozick, Dretske, Davidson, and other important contemporary philosophers. -- Richard Rorty Williams makes a good case for the view that skepticism as it is usually presented and defended is not a presuppositionless doctrine. He argues compellingly that if we examine its presuppositions, then quite often the case made for epistemological skepticism loses much of its persuasiveness. These points are well worth considering and discussing. -- Ernest Sosa

In Unnatural Doubts, Michael Williams constructs a masterly polemic against the very idea of epistemology, as traditionally conceived. Although philosophers have often found problems in efforts to study the nature and limits of human knowledge, Williams provides the first book that systematically argues against there being such a thing as knowledge of the external world. He maintains that knowledge of the world consitutes a theoretically coherent kind of knowledge, whose possibility needs to be defended, only given a deeply problematic doctrine he calls "epistemological realism." The only alternative to epistemological realism is a thoroughgoing contextualism.