Contains nineteen newly commissioned articles by top philosophers on various aspects of the theory of knowledge. The articles survey the field as well as make original contributions to contemporary debates. Contributors xi Introduction 3(22) Paul K. Moser Conditions and Analyses of Knowing 25(46) Robert K. Shope The Sources of Knowledge 71(24) Robert Audi A Priori Knowledge 95(49) Albert Casullo The Sciences and Epistemology 144(33) Alvin I. Goldman Conceptual Diversity in Epistemology 177(27) Richard Foley Theories of Justification 204(30) Richard Fumerton Internalism and Externalism 234(30) Laurence BonJour Tracking, Competence, and Knowledge 264(23) Ernest Sosa Virtues in Epistemology 287(29) John Greco Mind and Knowledge 316(20) John Heil Skepticism 336(26) Peter Klein Epistemological Duties 362(23) Richard Feldman Scientific Knowledge 385(23) Philip Kitcher Explanation and Epistemology 408(26) William G. Lycan Decision Theory and Epistemology 434(29) Mark Kaplan Embodiment and Epistemology 463(16) Louise M. Antony Epistemology and Ethics 479(34) Noah Lemos Epistemology in Philosophy of Religion 513(26) Philip L. Quinn Formal Problems about Knowledge 539(30) Roy Sorensen Bibliography on Epistemology 569(18) Paul K. Moser Index 587