Bertrand Russell'sOur Knowledge of the External World investigates the problem of perception from an analytic-philosophical perspective. Here the great British mathematician and philosopher gives a thoughtful exposition of his logically motivated epistemology and argues for a controversial solution to a long-standing philosophical riddle. Skilfully written with an accessible lucidity by a brilliant scholar, it requires of the reader neither prior knowledge of logic nor aptitude for philosophical inquiry. The book serves as essential reading for anyone interested in the intersection of logic and epistemology including the development of analytic philosophy in the twentieth century.