What Perdurabo Actually Is
Perdurabo The Life Of Aleister Crowley is a two-volume biography by Richard Kaczynski that covers Crowley's life from birth in 1875 to his death in 1947. The word "Perdurabo" comes from Crowley's own magical journal, meaning "I shall endure." Kaczynski spent roughly eight years researching this, digging through primary sources that previous biographers largely ignored or dismissed. The first volume covers up through World War I. The second picks up from there and continues through Crowley's later years in Hastings and his final months. It's considered the definitive scholarly biography of Crowley, and most serious cite it now instead of Oesterreich's older work or Ivor Vaughan-Rees's early accounts.Perdurabo The Life Of Aleister Crowley
I should be upfront about what this book does and doesn't do. It's not a guide to Crowley's magical system. It's a biography, albeit a detailed one. If you're looking for instruction on Thelema or ceremonial magic, you need a different source entirely. What it does well is present Crowley as a historical figure rather than a cartoon villain or a mystical genius depending on who's writing. Kaczynski reads Crowley's personal letters, his diaries, hotel records, and even some medical documents. He cross-references Crowley's own claims against external evidence. This matters because Crowley was a professional mythmaker who routinely inflated or fabricated details about his own life. I ran into a specific issue when I was comparing Kaczynski's timeline with Crowley's own published autobiography, Confessions of Aleister Crowley. The chapters on Crowley's time in Algeria and Mexico don't line up exactly between the two. Crowley dated some events loosely and adjusted dates in later revisions. The workaround I found was to check the marginal dates on Crowley's original diary entries in the Beinecke Library archives, which Kaczynski used but didn't always cite with exact page numbers. If you're doing your own fact-checking, the Beinecke finding aid for the Crowley collection is freely available online and lists every manuscript box with its date range.
How to Read It Effectively
Don't read this straight through like a novel unless you enjoy dense chronological. The structure is deliberately linear, which means the early years on England and the formal education at Malvern and Tonbridge get significant weight. That's the point Crowley himself spent formative years he later claimed defined his entire worldview. The real value is in the middle sections covering 1904 through 1914, the Cairo incident, the Book of the Law, and the founding of the Abbey of Thelema in Sicily. Kaczynski reconstructs these events using correspondence between Crowley and figures like Victor Neuburg, Alan Bennett, and Leah Hirsig. He doesn't romanticize any of them. One counter-intuitive thing most first-time readers miss: Crowley's magical practice wasn't the random occult theater people assume. It followed structured systems derived from the Golden Dawn tradition, and Kaczynski traces those lineages carefully. You can see where Crowley's techniques came from and how he modified them. If you skip the footnotes you're skipping half the book's actual contribution to understanding what Crowley actually did versus what he claimed he did.
Common Problems and Workarounds
The biggest practical issue with this book is the sheer volume of sourced material without easy digital lookup. Kaczynski cites hundreds of archival references, many from the Warburg Institute and private collections. If you want to verify a claim, you might need to request specific files through interlibrary loan or visit archives in person. I hit this wall trying to verify a detail about Crowley's 1912 trip to Russia. The book references a letter to a contact named Boris de Ruleff, but the exact location of that correspondence wasn't obvious. I found it by checking the Boris de Ruleff papers at the British Library's Asian and African Studies department. They're cataloged under Add MS 89147. Two hours of searching, zero results until I used the correct shelfmark. This happens more often than you'd expect in Crowley scholarship because many manuscripts are scattered across private holdings that aren't digitized. Another limitation: Kaczynski was writing before some major Crowley manuscript sales reached the public auction market. Later discoveries have occasionally shifted the record slightly, particularly around Crowley's financial records from the later 1920s and early 1930s. The book remains solid for most purposes, but if you're researching Crowley's economic situation during the Great Depression era, you may need supplementary sources from the Crowley estate sales that happened after Kaczynski finished his research.
Get the Full Details
Where to Find It
The book is published by Weiser Books and is widely available through major retailers. Both volumes are also accessible through most university libraries. A used copy of the first edition set will run you roughly forty to sixty dollars depending on condition. The paperback reprint is usually around twenty-five dollars per volume. It's not cheap for what you get if you're just casually interested. But if you're serious about understanding Crowley as a historical person rather than a meme or a religious symbol, it's essentially required reading. Nothing else comes close in terms of documentary rigor. Everything else is either hagiography or polemic at this point.
