Aleister Crowley (born Edward Alexander Crowley (/ˈkroʊli/); 12 October 1875 – 1 December 1947) was an English occultist, ceremonial magician, poet, and mountaineer. He was responsible for founding the religion and philosophy of Thelema, in which role he identified himself as the prophet entrusted with guiding humanity into the Aeon of Horus in the early 20th century.
http://en.wikipedia.org/wiki/Aleister_Crowley