Erich Neumann
Author: Erich Neumann
Publisher: Princeton University Press (1954)

As though a Copernican revolution has taken place within the psyche, consciousness faces inward and becomes aware of the self, about which the ego revolves in a perpetual paradox of identity and nonidentity.  The psychological process of assimilating the unconscious into our present-day consciousness begins at this point, and the consequent shifting of the center of gravity from the ego to the self signalizes the latest stage in the evolution of human consciousness.