These primitive motives and moods of war that we find in the nature of the social group itself, emerge finally in three aspects of the life of nations, and it is these aspects of the life of nations that appear to us as the causes of war. They are not separate and independent features of the social life, and it is in part only for the sake of convenience that they are sharply separated at all. They are all at bottom manifestations of the motive of power that runs through all history, and all the social and individual life. On one side this motive appears in moods and impulses that we called the "intoxication" moods and impulses. National honor was found to be another effect of it. The political motives of war are its concrete expression. These motives all together--all being but phases of a deep, powerful energy and purpose, are the source of the main movement in history out of which war comes. In this movement all the motives of the social life are always present and active at the same time. The good and the bad of national life are phases of a single purpose and are not two contrasted principles or moments. The past is always contained in the present. War, then, is the result of certain motives which are fundamental to the group life. It is a natural form in which, given a certain degree of intelligence and of complexity of the social life, these motives express themselves. All the motives and forms of expression are present in germ at least from the beginning of the development of the social life. Considering the whole history of war we see that it is a part of a very complex movement in human society, and yet that no war appears to be the final term of a process of inexorable logic. Taking history as a whole, we see that the natural laws involved and the nature of the social consciousness make a state of war from time to time highly probable, but war is not a necessary consequence of any natural law. Nations are self-conscious personalities. Perhaps in the future they may change their ways, abandon voluntarily their desires, subject themselves to discipline, or deliberately invent a plan of international relations that will have the effect of eliminating war from their lives altogether.