My intuition tells me that Being and non-being is what creates the universe. We tend to think of the Shadow (Jungian concept of the darkest aspect of the subconscious) as a place where our darkest and most horrendous aspects of the individual springs from. It is the wrong perception. The shadow is a portal, our deepest roots go all the way to primordial soup of creation, when there was everything in one single infinitesimal point; and as that it is too much, there is a line where it shares no light.