2013 Reprint of 1912 Edition. Full facsimile of the original edition, not reproduced with Optical Recognition Software. In this little book Russell has provided an intelligible and stimulating guide to a branch of knowledge which is often mistakenly considered too abstruse for the lay mind. He has confined himself chiefly to those problems of philosophy concerning which he thought it possible to say something positive and constructive. For this reason, theory of knowledge occupies a larger space than metaphysics, and some topics much discussed by philosophers are treated briefly. The work is concise, free from technical terms and perfectly clear to the general reader with no prior knowledge of the subject.