The war has grown, in the main, out of the life of impulse, not out of reason or desire. There is an impulse of aggression, and an impulse of resistance to aggression. Either may, on occasion, be in accordance with reason, but both are operative in many cases in which they are quite contrary to reason. Each impulse produces a whole harvest of attendant beliefs. The beliefs appropriate to the impulse of aggression may be seen in Bernhardi, or in the early Mohammedan conquerors, or, in full perfection, in the Book of Joshua. There is first of all a conviction of the superior excellence of one’s own group, a certainty that they are in some sense the chosen people. This justifies the feeling that only the good and evil of one’s own group is of real importance, and that the rest of the world is to be regarded merely as material for the triumph or salvation of the higher race. In modern politics this attitude is embodied in imperialism. Europe as a whole has this attitude towards Asia and Africa, and many Germans have this attitude towards the rest of Europe. Correlative to the impulse of aggression is the impulse of resistance to aggression. This impulse is exemplified in the attitude of the Israelites to the Philistines or of medieval Europe to the Mohammedans. The beliefs which it produces are beliefs in the peculiar wickedness of those whose aggression is feared, and in the immense value of national customs which they might suppress if they were victorious. When the war broke out, all the reactionaries in England and France began to speak of the danger to democracy, although until that moment they had opposed democracy with all their strength. They were not insincere in so speaking: the impulse of resistance to Germany made them value whatever was endangered by the German attack. They loved democracy because they hated Germany; but they thought they hated Germany because they loved democracy. The correlative impulses of aggression and resistance to aggression have both been operative in all the countries engaged in the war. Those who have not been dominated by one or other of these impulses may be roughly divided into three classes. There are, first, men whose national sentiment is antagonistic to the State to which they are subject. This class includes some Irish, Poles, Finns, Jews, and other members of oppressed nations. From our point of view, these men may be omitted from our consideration, since they have the same impulsive nature as those who fight, and differ merely in external circumstances.