Rodney George Collin-Smith (26 April 1909 – 3 May 1956), known as Rodney Collin, was a British writer who focused on the area of spiritual development. His work was heavily influenced by his teacher P. D. Ouspensky and, through him, G. I. Gurdjieff and the thought system associated with them. 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. Source: Wikipedia (en)