This analogy tempts us to classify as traumatic those experiences as well upon which our neurotics appear to be fixated. Thus the possibility is held out to us of having found a simple determining factor for the neurosis. It would then be comparable to a traumatic disease, and would arise from the inability to meet an overpowering emotional experience. As a matter of fact this reads like the first formula, by which Breuer and I, in 1893-1895, accounted theoretically for our new observations. A case such as that of our first patient, the young woman separated from her husband, is very well explained by this conception. She was not able to get over the unfeasibility of her marriage, and has not been able to extricate herself from this trauma. But our very next, that of the girl attached to her father, shows us that the formula is not sufficiently comprehensive. On the one hand, such baby love of a little girl for her father is so usual, and so often outlived that the designation "traumatic" would carry no significance; on the other hand, the history of the patient teaches us that this first erotic fixation apparently passed by harmlessly at the time, and did not again appear until many years later in the symptoms of the compulsion neurosis. We see complications before us, the existence of a greater wealth of determining factors in the disease, but we also suspect that the traumatic viewpoint will not have to be given up as wrong; rather it will have to subordinate itself when it is fitted into a different context. Here again we must leave the road we have been traveling. For the time being, it leads us no further and we have many other things to find out before we can go on again. But before we leave this subject let us note that the fixation on some particular phase of the past has bearings which extend far beyond the neurosis. Every neurosis contains such a fixation, but every fixation does not lead to a neurosis, nor fall into the same class with neuroses, nor even set the conditions for the development of a neurosis. Mourning is a type of emotional fixation on a theory of the past, which also brings with it the most complete alienation from the present and the future. But mourning is sharply distinguished from neuroses that may be designated as pathological forms of mourning. It also happens that men are brought to complete deadlock by a traumatic experience that has so completely shaken the foundations on which they have built their lives that they give up all interest in the present and future, and become completely absorbed in their retrospections; but these unhappy persons are not necessarily neurotic. We must not overestimate this one feature as a diagnostic for a neurosis, no matter how invariable and potent it may be.