Aleister Crowley (1875-1947) has been seen variously as a man of notorious sexual habits, a satanic occultist, and latterly an icon of the 1960s love generation. But Crowley was neither a mere sexual predator nor a vulgar black magician. He was the synthesiser of what he termed 'Magick'. In this cogent and intensely readable account of Crowley's life and occult progress, Francis X King examines each of the three main sources of Magick - thus throwing much new light on Crowley himself, and doing much to explain the continuing admiration for his writings.