Magick is the science and art of causing change to occur in conformity with will.
Aleister Crowley was a noted and controversial occultist, ceremonial magician and poet.
He has been called the wickedest man in the world or The Great Beast 666 or The Master Therion but he remained a highly influential figure over Western esotericism and the counterculture.
In the part I, he provides detailed instructions for different practice.
Alicia Editions Meditation and magick: book iv liber aba magick part i and ii, hardcover/aleister crowley
