Epistemology is a branch of philosophy that studies the origin, nature and limits of human knowledge. Contemporary epistemology is a theory of knowledge in terms of reasons, evidence, justification and explanation. This book shows how Anglo-American philosophers captivated by the power of modern science and concomitant advances in logic and mathematics mistook knowledge itself to be reducible to the propositions of science and logic. Ethics, along with metaphysics and religion, were cast off as mere expressions of sentiment at best, or as utter nonsense at worst. Is science the only source of knowledge? Can ethics count as knowledge? Are there kinds of knowledge beyond epistemology? This book develops innovative answers to these and other related questions.