Amrita: Essays in Magical Rejuvenation
Aleister Crowley, born Edward Alexander Crowley, (12 October 1875 - 1 December 1947) was an English occultist, prolific writer and poet, mystic, astrologer, drug experimenter, hedonist, aficionado of chess and mountain climbing, sexual revolutionary and social critic. He is perhaps best known today for his occult writings, especially The Book of the Law, the central sacred text of Thelema. Crowley was also an influential member in several occult organizations, including the Golden Dawn, the Argenteum Astrum, and Ordo Templi Orientis (O.T.O.). Crowley gained much notoriety during his lifetime, and was famously dubbed "The Wickedest Man In the World."
Aleister Crowley founded the religion of Thelema, which became adopted by the Ordo Templis Orientis (O.T.O.) as well as the magical order Argenteum Astrum, the Order of the Silver Star. He was also a highly controversial member of the Hermetic Order of the Golden Dawn, where he was known by the magical name of Frater Perdurabo.