Anton LaVey, real name Howard Levy, a former carnival barker, wrote the satanic bible.
Actually, he put his name to it and added some thoughts here and there.
Someone in his "church" actually compiled the plagiarized materials used to create it.
Stolen were writings from Ayn Rand, Ragnar's Redbeard, and Neitzche.
Crowley was actually a British agent working their psy-ops program. Everything Crowley did was to draw in certain high brow people in British society and lead them into compromising acts under that cloak of occult high magic.