Bertrand Russell's writings on logic, metaphysics, philosophy of language and epistemology are among the most influential of the twentieth century. Logic and Knowledge presents Russell's very best and most important work on these topics in a single volume, which by placing philosophical logic at its core was of monumental importance in shaping the path of analytical philosophy. It includes classics such as 'On Denoting', one of the founding pieces of philosophy of the twentieth century as well as chapters on logical atomism, a term coined by Russell himself to describe his view that the world consists in a plurality of independent entities, which by coming together form facts. Along with other essays on fundamental philosophical problems including the logic of relations, universals and particulars, and propositions, Logic and Knowledge shows why Russell remains one of the most important philosophers of the last century. This Routledge Classics edition includes a new Foreword by Graham Stevens.