It is a remarkable fact, which we come across again and again, that absolutely everybody, even the most unqualified layman, thinks he knows all about psychology as though the psyche were something that enjoyed the most universal understanding. But anybody who really knows the human psyche will agree with me when I say that it is one of the darkest and most mysterious regions of our experience. There is no end to what can be learned in this field. The psyche creates reality every day. The only expression I can use for this activity is fantasy.
Fantasy is just as much feeling as thinking, as much intuition as sensation.
Sometimes it appears in primordial form, sometimes it is the ultimate and boldest product of all our faculties combined. Fantasy, therefore, seems to me the clearest expression of the specific activity of the psyche. P.78 What we call fantasy is simply spontaneous psychic activity, and it wells up wherever the inhibitive action of the conscious mind abates or, as in sleep, ceases altogether. P.125 Psychic existence is the only category of existence of which we have immediate knowledge, since nothing can be known unless it first appears as a psychic image. Only psychic existence is immediately verifiable.