What fascinated me about Gurdjieff’s approach was its resonance with hermetic ideas of levels of cosmos — the concept of “As Above-So Below” – to begin to describe if not explain the possible existence of infinite worlds — and to address, for example, the inexplicable experience of looking out at the stars and finding no “outside” and meditating sufficiently to find no self or “inside.”
This led me to the discovery of Rodney Collin’s Theory of Celestial Influence (link to download PDF) which tries to provide more details of how Gurdjieff’s cosmology might unfold. Collin was a direct student of P.D. Ouspensky, a student of Gurdjieff who went off on his own but whose classic In Search of the Miraculous is a faithful narrative of his work with the Gurdjieff himself.Here is a brief description of Collin’s hierarchy of cosmology:
Seen from another point of view this “medium” is composed of the sections of higher worlds. We have already compared our Solar System within a section of the Milky Way to a cell within a section of the human body. The cell to the human section, and our Sun to the Milky Way, are as points to planes. So we may say, as a law, that the medium in which any world lives and moves and has its being is to it as a plane is to a point. The cross-section of the human body is the plane in which the cell moves; the surface of the Earth is the plane of Nature in which man moves; the ecliptic of the Solar System is the plane in which the Earth moves; and the disk of the Milky Way is the plane in which the Sun moves.
(Theory of Celestial Influence, page 32)