Ouspensky . From

Pyotr Demyanovich Uspensky (Russian: Пётр Демьянович Успенский; 5 March 1878 – 2 October 1947), known in English as P. D. Ouspensky, was a Russian philosopher and esotericist known for his expositions of the early work of the Greek-Armenian teacher of esoteric doctrine George Gurdjieff. He met Gurdjieff in Moscow in 1915, and was associated with the ideas and practices originating with Gurdjieff from then on. He taught ideas and methods based in the Gurdjieff system for 25 years in England and t…