Since those days I have steadily lost control over my memory; of late, however, I became convinced that with the aid of a certain artifice I can recall far more than I would otherwise credit myself with remembering. For example, when, during my office hours, a patient states that I have seen him before and I cannot recall either the fact or the time, then I help myself by guessing--that is, I allow a number of years, beginning from the present time, to come to my mind quickly. Whenever this could be controlled by records of definite information from the patient, it was always shown that in over ten years[30] I have seldom missed it by more than six months. The same thing happens when I meet a casual acquaintance and, from politeness, inquire about his small child. When he tells of its progress I try to fancy how old the child now is. I control my estimate by the information given by the father, and at most I make a mistake of a month, and in older children of three months. I cannot state, however, what basis I have for this estimate. Of late I have grown so bold that I always offer my estimate spontaneously, and still run no risk of grieving the father by displaying my ignorance in regard to his offspring. Thus I extend my conscious memory by invoking my larger unconscious memory. I shall report some _striking_ examples of forgetting which for the most part I have observed in myself. I distinguish forgetting of impressions and experiences, that is, the forgetting of knowledge, from forgetting of resolutions, that is, the forgetting of omissions. The uniform result of the entire series of observations I can formulate as follows: _The forgetting in all cases is proved to be founded on a motive of displeasure._ A. FORGETTING OF IMPRESSIONS AND KNOWLEDGE. (_a_) During the summer my wife once made me very angry, although the cause in itself was trifling. We sat in a restaurant opposite a gentleman from Vienna whom I knew, and who had cause to know me, and whose acquaintance I had reasons for not wishing to renew. My wife, who had heard nothing to the disrepute of the man opposite her, showed by her actions that she was listening to his conversation with his neighbours, for from time to time she asked me questions which took up the thread of their discussion. I became impatient and finally irritated. A few weeks later I complained to a relative about this behaviour on the part of my wife, but I was not able to recall even a single word of the conversation of the gentleman in the case. As I am usually rather resentful and cannot forget a single incident of an episode that has annoyed me, my amnesia in this case was undoubtedly determined by respect for my wife.