From the consideration of any such simple example as the desire for food we determine that the first element toward and in desire is a lack-pain generating felt want, and so—and such common use of words is significant—we want, _i.e._, desire what we are in want of. A feeling of need or lack is fundamental. Now sense of lack is more than pain from restriction or intermission, for it implies a measure of in-ground integrated experience with objects, a constant connecting of object with purely subjective experience. For instance, hunger and feeling the need of food, the craving for food, are not the same, for it is evident that to feel lack of anything with such a central pain as hunger-pain means that this something has often been conjoined with the pain experience. Hunger is primarily an organic uneasiness and gnawing pain which does not include any sense of object as of a food or reference thereto. Our subjective and objective experience have been so completely integrated, and feeling of lack and that for a very definite thing has become so ingrained in mind with pains, we feel so spontaneously and immediately need of _thing_ in connection with organic pains that it is very difficult for us to realize a state where this connection has not been formed or is forming. But it would seem that the first hunger pains of the infant are of this primitive quality, and that need is not felt in connection therewith. It is only after some crude cognitions of bodies have been generated in connection with the feeding act and as guides thereto that on occasion of hunger pains there can occur the sense of lack of food object, a painful feeling of unrealization, at first very dimly representative, and so a craving, an incipient emotion. Desire rests then upon capacity to feel the lack of accustomed satisfying thing in connection with some form of perception or representation of the thing. When a satisfying object is missing, it must be _missed_ psychically before desire can awake. The reaction when a customarily conjoined experience does not occur is a peculiar feeling in mind, a disturbance, uneasiness, a unique sense of loss and lack which is the immediate stimulus of desire. Hunger at first leads blindly to activities tending to satisfy hunger, but the satisfying thing—food—therewith becomes gradually known, hence thereafter when hunger comes there is struggle both to know and to act thereby. This struggle has impulsation from feelings of lack.