Rodney George Collin-Smith, known as Rodney Collin, was a British writer who was prolific in the area of spiritual development. His work was heavily influenced by his teacher P. D. Ouspensky and, through him, G. I. Gurdjieff and their system of spiritual development. His best known work, The Theory of Celestial Influence, is an ambitious attempt to unite astronomy, physics, chemistry, human physiology and world history with his own version of planetary influences.
