BY BERTRAND RUSSELL The Scientific Outlook Cr. 8vo. Third Impression ros. 6d. net "A book so full of life and wit and, gaiety and, let ns add, wisdom and knowledge. ... It is admirably written, and contains passages of singular beauty. ... It is perhaps needless to say that the whole book is important." Manchester Guardian. "Brilliantly witty." Times Literary Supplement. "It is an extraordinary gay and inspiring work." Daily Telegraph. Introduction to Mathematical Philosophy Demv Svo. Second Edition, Sixth Impression i8s. net "Mr. Russell has endeavoured to give, in non-technical language, an account of his criticism as it affects arithmetic and logic. He has been remarkably successful." Athenaeum. The Analysis of Mind Demy Svo. Eighth Impression 205. na "Here are the old clarity and the old charm; the restrained, illuminating wit; the easy rhythm of artfully pungent sentences. ... A most brilliant essay in psychology." New Statesman. Our Knowledge of the External World AS A FIELD FOR SCIENTIFIC METHOD IN PHILOSOPHY Demy Svo. New and Revised Edition 1 8s. net An Outline of Philosophy Demy Svo. Sixth Impression 2 is. net "Of few books on philosophy can it be said that they are at once im portant and delightful; but it can be said of this one." Manchester Guardian.