This new edition of the classic Contemporary Theories of Knowledge has been significantly updated to include analyses of the recent literature in epistemology. Rather than merely making slight amendments to the first edition, Pollock and Cruz have undertaken a groundbreaking assessment of twentieth-century epistemology. This book is both an advanced textbook offering traditional discussions of foundationalism, coherentism, and reliabilism and a detailed treatise on the authors' own distinctive view, direct realism.