the shirt says it all...
Aleister Crowley, original name Edward Alexander Crowley, (born October 12, 1875, Royal Leamington Spa, England—died December 1, 1947, Hastings), British occultist, writer, and mountaineer, who was a practitioner of " magick" (as he spelled it) and called himself the Beast 666.
Aleister Crowley: The Wickedest Man in the World
A highly controversial figure in his own time, Aleister Crowley is now considered highly influential in occult circles.
https://www.learnreligions.com/aleister-crowley-thelemic-prophet-95903
