A General Introduction to Psychoanalysis · Sigmund Freud
THE DREAM
It would be a mistake, however, to omit to mention, with fitting emphasis, another result of these investigations. The dream wishes which try to disturb our sleep are not known to us, in fact we learn of them first through the dream interpretation. Therefore, they may be described as "at that time" unconscious in the sense above defined. But we can go beyond this and say that they are more than merely "at that time" unconscious. The dreamer to be sure denies their validity, as we have seen in so many cases, even after he has learned of their existence by means of the interpretation. The situation is then repeated which we first encountered in the interpretation of the tongue slip "hiccough" where the toastmaster was outraged and assured us that neither then nor ever before had he been conscious of disrespectful impulse toward his chief. This is repeated with every interpretation of a markedly distorted dream, and for that reason attains a significance for our conception. We are now prepared to conclude that there are processes and tendencies in the psychic life of which one knows nothing at all, has known nothing for some time, might, in fact, perhaps never have known anything. The unconscious thus receives a new meaning for us; the idea of "at present" or "at a specific time" disappears from its conception, for it can also mean _permanently_ unconscious, not merely _latent at the time_. Obviously we shall have to learn more of this at another session.
Text from Project Gutenberg, public domain in the United States.