"When you observe yourself within, you see moving images, a world of images, generally known as fantasies, yet these fantasies are facts. It is a fact that a man has such and such a fantasy, and it is such a tangible fact, for instance, that when a man has a certain fantasy, another man may lose his life… Everything was fantasy to begin with, and fantasy has a proper reality, that is not to be forgotten. Fantasy is not nothing, it is of course not a tangible object, but it is a fact nevertheless… Psychical events are facts, are realities, and when you observe the stream of images within, you observe an aspect of the world, of the world within” 

–  Carl Jung, from The World Within: C.G. Jung In His Own Words, a documentary