The mysteries practised among men are unholy mysteries.
 Bertrand Russell, A History of Western Philosophy (1945). copy citation

Context

“And the Sibyl, with raving lips uttering things mirthless, un-bedizened, and unperfumed, reaches over a thousand years with her voice, thanks to the god in her. Souls smell in Hades. Greater deaths win greater portions. (Those who die then become gods.) Night-walkers, magicians, priests of Bacchus and priestesses of the wine-vat, mystery-mongers. The mysteries practised among men are unholy mysteries. And they pray to these images, as if one were to talk with a man’s house, knowing not what gods or heroes are. For if it were not to Dionysus that they made a procession and sang the shameful phallic hymn, they would be acting most shamelessly.” source