PREFACE IN the following pages I have confined myself in the main to those problems of philosophy in regard to which I thought it possible to say something positive and constructive, since merely negative criticism seemed out of place. For this reason, theory of knowledge occupies a larger space than metaphysics in the present volume, and some topics much discussed by philosophers are treated very briefly, if at all. I have derived valuable assistance from unpublished writings of G. E. Moore and J. M. Keynes: from the former, as regards the relations of sense-data to physical objects, and from the latter as regards probability and induction. I have also profited greatly by the criticisms and suggestions of Professor Gilbert Murray. 1912...
III WAR AS AN INSTITUTION IN spite of the fact that most nations at most times, are at peace, war is one of the permanent institutions of all free communities, just as Parliament is one of our permanent institutions in spite of the fact that it is not always sitting. It is war as a permanent institution that I wish to consider: why men tolerate it; why they ought not to tolerate it; what hope there is of their coming not to tolerate it; and how they could abolish it if they wished to do so. War is a conflict between two groups, each of which attempts to kill and maim as many as possible of the other group in order to achieve some object which it desires. The object is generally either power or wealth. It is a pleasure to exercise authority over other men, and it is a pleasure to live on the produce of other men's labor. The victor in war can enjoy more of these delights than the vanquished. But war, like all other natural activities, is not so much prompted...