This text describes Gurdjieff''s cosmology from Ouspensky''s perspective as student, and shows how Ouspensky''s formulation of his own ideas eventually led to his break with Gurdjieff. The book conveys a strong and lasting impression that not only did Ouspensky discover a real knowledge about man and his relationship with the universe, but that a practical cosmic teaching for the conduct of life is even now in existence.