It is the ultimate integration of the outer world and inner world that is the Great Work and purpose of High Magic. The essential structures of outer and inner worlds are here conceived of in parallel terms, seen through one common comprehensive framework, and their integration is thus revealed as comprehensible and progressive gnosis. For the magician, this is the key to learning to use the psyche, or inner world, to control and direct the forces of the outer worlds of being. Thus, and only thus, do we fulfill our destiny and become masters of our fate.