Traditions › Ordo Templi Orientis › Sources Tradition · Ordo Templi Orientis Sources Overview Origins Beliefs Symbols Figures Controversies Sources Sources Aleister Crowley. The Book of the Law (Liber AL vel Legis) Privately printed , 1909 Richard Kaczynski. Perdurabo: The Life of Aleister Crowley North Atlantic Books , 2010 Kenneth Grant. Aleister Crowley and the Hidden God Frederick Muller , 1973 Previous Controversies