Both Stephen R. Donaldson and P. D. Ouspensky are known for esotericism?
P. D. Ouspensky Pyotr Demianovich Ouspenskii (known in English as Peter D. Ouspensky, Пётр Демья́нович Успе́нский; 5 March 1878 – 2 October 1947), was a Russian mathematician and esotericist known for his expositions of the early work of the Greek-Armenian teacher of esoteric doctrine George Gurdjieff, whom he met in Moscow in 1915. He was associated with the ideas and practices originating with Gurdjieff from then on. He shared the (Gurdjieff) "system" for 25 years in England and the United States, having separated from Gurdjieff in 1924 personally, for reasons he explains in the last chapter of his book "In Search of the Miraculous".
Esoteric Nazism Esoteric Nazism is an umbrella term used to describe various mystical interpretations and adaptations of Nazism in the post–World War II period. After 1945, esoteric elements of the Third Reich were adapted into new "völkisch" religions of white nationalism.