Page:Freud - Wit and its relation to the unconscious.djvu/270

 the qualities of this unconscious mental activity and its differentiation from the “foreconscious” which is capable of consciousness.

The Unconscious

A novel and difficult theory that runs counter to our habitual modes of thinking can hardly gain in lucidity by a condensed exposition. I can therefore accomplish little more in this discussion than refer the reader to the detailed treatment of the unconscious in my Interpretation of Dreams, and also to Lipps’s work, which I consider most important. I am aware that he who is under the spell of a good old philosophical training, or stands aloof from a so-called philosophical system, will oppose the assumption of the “unconscious psychic processes” in Lipps’s sense and in mine and will desire to prove the impossibility of it preferably by means of definitions of the term psychic. But definitions are conventional and changeable. I have often found that persons who dispute the unconscious on the grounds of its absurdity or impossibility have not received their impressions from those sources from which I, at least, have found it necessary to draw, in order to become aware of its existence. These opponents had never witnessed the effect