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Aleister Crowley (1875-1947) was a record-breaking mountaineer (climbing K2 and Kanchenjunga), one of the first earnest Western students of Buddhism and yoga, a prolific and sublime poet and fiction-writer in the supernatural tale tradition, and a painter.  He was a devoted adept of the art of high magick.  He remains the chief figure and writer in the field of scholarly and practical reformulation of the mystical insights of the Western esoteric tradition, and was founder of the A.·.A.·., a still-active, advanced, secret order which scientifically initiates into these mysteries.  As Prophet of Thelema, his formal adherents in the O.T.O. (The Ordo Templi Orientis; a paramasonic society which he restructured as head) constitute an intelligent, devoted, international group of a few thousand.

It is not actually wrong to regard me as a teacher, but it is certainly liable to mislead; fellow-student, or, if you like, fellow-sufferer, seems a more appropriate definition.

The climax of my life was what is known as the Cairo Working [wherein was received The Book of the Law]....  I fought against this book for years; but it proved irresistible.

I do not think I am boasting unfairly when I say that my personal researches have been of the greatest value and importance to the study of the subject of Magick and Mysticism in general, especially my integration of the various thought-systems of the world, notably the identification of the system of the Yi King with that of the Qabalah.  But I do assure you that the whole of my life's work, were it multiplied a thousand fold, would not be worth one tithe of the value of a single verse of The Book of the Law.

ALEISTER CROWLEY
Magick without Tears, Introduction, Letter A (March 19, 1943)

"Wasn't Aleister Crowley a Satanist?"

Current Crowley Books

Quotes from His Autohagiography:  "The Confessions of Aleister Crowley"