A psychology of the war moods must undertake to trace the history of the motive of power, considering its beginnings as the desire and sense of satisfaction connected with the performance of definite instinctive acts, and with their physiological results, with the exertion of power and the production of effects upon objects. It is in the performance of instinctive acts, in which superiority is inborn, that animal and man obtain their original sense of power or superiority. As capacities are differentiated and multiplied, the experiences of achievement generate a mood and a more general impulse, a desire to exert power for its own sake. The sensory or organic elements tend to predominate in this generalized motive, simply because the specific actions in which the sense of power is obtained cannot so readily, or cannot at all, be generalized. Such an organization of actions and states in consciousness demands nothing new in principle, implies nothing different from that found on the intellectual side when concepts are formed from concrete experiences. The associative processes and the selective principles everywhere present in mental action are all that are necessary to be assumed here. We may take advantage, however, of the special investigations of affective logic, and the like, as giving evidence in support of such a conception of the formation of moods as is here being worked out. We are likely to make the mistake of thinking the specific instincts and the impulses and pleasure states that we find in human experiences, such as ecstasy, as the whole of these experiences, and to overlook the constant process of generalization that goes on in all the mental activity of the individual. For example, we may think of various plays which involve instinctive actions as being wholly explained by, or to be made up of, these instinctive acts alone, whereas in most plays that take the form of excitement, abandon or ecstasy, there are being employed processes which are general in the sense of reenforcing all the specific acts alike, and are yet specific in the sense that they are themselves, or have been, practical: that is, they are in reality processes that belong to the fundamental strata of consciousness--to the nutritional and reproductive tendencies. Out of these tendencies the more complex processes of which we speak are made, but they are no mere repetition of old forms. That, at least, is the way these ecstatic moods appear from our point of view.