The difference between the "natural" individuation process, which runs its course unconsciously, and the one that is consciously realized is tremendous. In the first case, consciousness nowhere intervenes; the end remains as dark as the beginning. In the second case, so much darkness comes to light that the personality is permeated with light and consciousness necessarily gains in scope and insight. The encounter between conscious and unconscious has to ensure that the light that shines in the darkness is not only comprehended by the darkness, but comprehends it.