In the same way the patient, having reached a certain part of the work, may recall a dream which occurred three, four, or more days ago, and which has hitherto remained in oblivion. *

* Ernest Jones describes an analogous case of frequent occurrence; during the analysis of one dream another dream of the same night is often recalled which until then was not merely forgotten, but was not even suspected.

Psycho-analytical experience has furnished us with yet another proof of the fact that the forgetting of dreams depends far more on the resistance than on the mutually alien character of the waking and sleeping states, as some writers have believed it to depend. It often happens to me, as well as to other analysts, and to patients under treatment, that we are waked from sleep by a dream, as we say, and that immediately thereafter, while in full possession of our mental faculties, we begin to interpret the dream. Often in such cases I have not rested until I have achieved a full understanding of the dream, and yet it has happened that after waking I have forgotten the interpretation- work as completely as I have forgotten the dream-content itself, though I have been aware that I have dreamed and that I had interpreted the dream. The dream has far more frequently taken the result of the interpretation with it into forgetfulness than the intellectual faculty has succeeded in retaining the dream in the memory. But between this work of interpretation and the waking thoughts there is not that psychic abyss by which other writers have sought to explain the forgetting of dreams. When Morton Prince objects to my explanation of the forgetting of dreams on the ground that it is only a special case of the amnesia of dissociated psychic states, and that the impossibility of applying my explanation of this special amnesia to other types of amnesia makes it valueless even for its immediate purpose, he reminds the reader that in all his descriptions of such dissociated states he has never attempted to discover the dynamic explanation underlying these phenomena. For had he done so, he would surely have discovered that repression (and the resistance produced thereby) is the cause not of these dissociations merely, but also of the amnesia of their psychic content.

That dreams are as little forgotten as other psychic acts, that even in their power of impressing themselves on the memory they may fairly be compared with the other psychic performances, was proved to me by an experiment which I was able to make while preparing the manuscript of this book. I had preserved in my notes a great many dreams of my own which, for one reason or another, I could not interpret, or, at the time of dreaming them, could interpret only very imperfectly. In order to obtain material to illustrate my assertion, I attempted to interpret some of them a year or two later. In this attempt I was invariably successful; indeed, I may say that the interpretation was effected more easily after all this time than when the dreams were of recent occurrence. As a possible explanation of this fact, I would suggest that I had overcome many of the internal resistances which had disturbed me at the time of dreaming. In such subsequent interpretations I have compared the old yield of dream-thoughts with the present result, which has usually been more abundant, and I have invariably found the old dream-thoughts unaltered among the present ones. However, I soon recovered from my surprise when I reflected that I had long been accustomed to interpret dreams of former years that had occasionally been related to me by my patients as though they had been dreams of the night before; by the same method, and with the same success. In the section on anxiety-dreams I shall include two examples of such delayed dream-interpretations. When I made this experiment for the first time I expected, not unreasonably, that dreams would behave in this connection merely like neurotic symptoms. For when I treat a psychoneurotic for instance, an hysterical patient, by psychoanalysis, I am compelled to find explanations for the first symptoms of the malady, which have long since disappeared, as well as for those still existing symptoms which have brought the patient to me; and I find the former problem easier to solve than the more exigent one of today. In the Studies in Hysteria, * published as early as 1895, I was able to give the explanation of a first hysterical attack which the patient, a woman over forty years of age, had experienced in her fifteenth year. *(2)

* Studien uber Hysterie, Case II.