Logic and Knowledge has been acclaimed as the most widely-used university text for teaching Russell's philosophy. Ten essays, including the landmark On Denoting, which extend through fifty years in the life of one of the great philosophers of our time. Many of Bertrand Russell's most important essays in logic and the theory of knowledge were not easily available until Professor Marsh collected them together in 1956. It is now the best source of Russell's views in these areas and is firmly established as a philosophical classic in its own right. The collection presents essays which are both historically important and which have profoundly influenced the course of philosophy.