We are naturally not in the habit of explaining the forgetting of intentions which we daily experience in every possible situation as being due to a recent change in the adjustment of motives. We generally leave it unexplained, or we seek a psychologic explanation in the assumption that at the time of execution the required attention for the action, which was an indispensable condition for the occurrence of the intention, and was then at the disposal of the same action, no longer exists. Observation of our normal behaviour towards intentions urges us to reject this tentative explanation as arbitrary. If I resolve in the morning to carry out a certain intention in the evening, I may be reminded of it several times in the course of the day, but it is not at all necessary that it should become conscious throughout the day. As the time for its execution approaches it suddenly occurs to me and induces me to make the necessary preparation for the intended action. If I go walking and take a letter with me to be posted, it is not at all necessary that I, as a normal not nervous individual, should carry it in my hand and continually look for a letter-box. As a matter of fact I am accustomed to put it in my pocket and give my thoughts free rein on my way, feeling confident that the first letter-box will attract my attention and cause me to put my hand in my pocket and draw out the letter. This normal behaviour in a formed intention corresponds perfectly with the experimentally produced conduct of persons who are under a so-called “post-hypnotic suggestion” to perform something after a certain time.[37] We are accustomed to describe the phenomenon in the following manner: the suggested intention slumbers in the person concerned until the time for its execution approaches. Then it awakes and excites the action. In two positions of life even the layman is cognizant of the fact that forgetting referring to intended purposes can in no wise claim consideration as an elementary phenomenon no further reducible, but realizes that it ultimately depends on unadmitted motives. I refer to affairs of love and military service. A lover who is late at the appointed place will vainly tell his sweetheart that unfortunately he has entirely forgotten their rendezvous. She will not hesitate to answer him: “A year ago you would not have forgotten. Evidently you no longer care for me.” Even if he should grasp the above cited psychologic explanation, and should wish to excuse his forgetting on the plea of important business, he would only elicit the answer from the woman, who has become as keen-sighted as the physician in the psychoanalytic treatment, “How remarkable that such business disturbances did not occur before!” Of course the woman does not wish to deny the possibility of forgetting; but she believes, and not without reason, that practically the same inference of a certain unwillingness may be drawn from the unintentional forgetting as from a conscious subterfuge.