"Richard Kaczynski's Perdurabo: the Life of Aleister Crowley is the one biography that is absolutely necessary for anyone who wishes to know more about one of the most creative, seminal, and misunderstood figures of the last hundred years."
-- David Tibet, Founder of Current 93

"Several recently-published biographies of Crowley do justice, for the most part, to his life and works. But their offerings now stand like skeletal frames of unfinished houses next to Kaczynski's magnificently constructed edifice. Every brick is set in place with the mortar of meticulous research and insight. Thank you, Dr. Kaczynski. I've waited thirty-five years for this." -- Lon Milo DuQuette, author of The Magick of Aleister Crowley

"A brilliant essayist, a superior poet, and an extraordinary artist, mountaineer, and explorer, the Crowley presented in these witty and erudite pages is at once shocking, wise, egocentric, petty, inspirational and, most importantly, real. Roundly rejecting the pantomime villain at the center of previous biographies and deeply suspicious of the nonsensical hero-worship of some of his modern followers, Kaczynski's portrait of Crowley is balanced and well-informed. Rare illustrations support a superbly written and meticulously researched text." -- Paul Feazey, LAShTAL.com

"This is not only the most carefully-researched, detailed, and informative biography of Crowley yet written but also a remarkable insight into the nature of magic itself." -- Ronald Hutton, author of The Triumph of the Moon and Blood and Mistletoe: The History of the Druids in Britain

"At long last, the world has a balanced and readable biography that reflects how magick shaped every facet of Aleister Crowley's life. And Dr. Kaczynski doesn't dismiss magick as humbug or mumbo-jumbo but validates it as a legitimate method of spiritual development meriting serious study." -- Christopher S. Hyatt, PhD, author of Undoing Yourself