Dennis Wheatley said this quote

“ Take that absurd fool Elipas Levi who was supposed to be the Grand High Whatnot in Victorian times. Did you ever read his book, The Doctrine and Ritual of Magic? In his introduction he professes that he is going to tell you all about the game and that he’s written a really practical book, by the aid of which anybody who likes can raise the devil, and perform all sorts of monkey tricks. He drools on for hundreds of pages about fiery swords and tetragrams and the terrible aqua poffana, but does he tell you anything? Not a blessed thing. Once it comes to a showdown he hedges like the crook he was and tells you that such mysteries are far too terrible and dangerous to be entrusted to the profane. Mysterious balderdash my friend. I’m going to have a good strong nightcap and go to bed. ”