The dynamic principle of fantasy is play, a characteristic also of the child, and as such it appears inconsistent with the principle of serious work. But without this playing with fantasy any creative work has ever yet come to birth. The debt we owe to the play of imagination is incalculable. It is therefore short-sighted to treat fantasy, on account of its risky or unacceptable nature, as a thing of little worth. ~Carl Jung; Psychological Types Ch. 1; Page 82.
Fantasy is the creative function—the living form is a result of fantasy. Fantasy is a pre-stage of the symbol, but it is an essential characteristic of the symbol that it is not mere fantasy. ~Carl Jung, 1925 Seminar, Page 11
Everything you do here, all this, everything, was fantasy to begin with, and fantasy has a proper reality. ~Carl Jung, Evans Conversations, Page 22.
That is not to be forgotten; fantasy is not nothing. It is, of course, not a tangible object; but it is a fact nevertheless. ~Carl Jung, Evans Conversations, Page 22.
Fantasy is, you see, a form of energy, despite the fact that we can’t measure it. It is a manifestation of something, and that is a reality. ~Carl Jung, Evans Conversations, Page 22.
Passive fantasy […] is always in need of conscious criticism […] whereas active fantasy [,,,] does not require criticism so much as understanding. ~Carl Jung, CW 6, Par. 714.
Going back to the question of fantasizing, if once the resistance to free contact with the unconscious can be overcome, and one can develop the power of sticking to the fantasy, then the play of the images can be watched. ~Carl Jung, 1925 Seminar, Page 38.
Besides the obvious personal sources, creative fantasy also draws upon the forgotten and long buried primitive mind with its host of images, which are to be found in the mythologies of all ages and all peoples. ~Carl Jung, CW 5, Pages xxiv-xxv
Christianity, like every closed system of religion, has an undoubted tendency to suppress the unconscious in the individualas much as possible, thus paralyzing his fantasy activity. ~Carl Jung, CW 6, Para 80
Wherever we can observe a religion being born, we see how the doctrinal figures flow into the founder himself as revelations, inother words, as concretizations of his unconscious fantasy. ~Carl Jung, CW 6, Para 80