We are microcosms, mirroring existence, and bearing unlimited potential for removing the restrictions which limit us on all levels, spiritual, psychological, social and physical. This creates a fundamental conflict in human nature.
Half wishes to be a beneficiary and the other half a benefactor.
Cosmology explains how and why this came to be. This conflict separates us from one another and from the light of reality that is meant to inhabit us. These two tendencies, receiving and giving, create four and only four modalities of existence. Essence has many layers, like an onion. The outer layers concern what we all have in common.