"I know the Unknown God," said the little priest with an unconscious grandeur of certitude that stood up like a granite tower. "I know his name; it is Satan. The true God was made flesh and dwelt among us. And I say to you, wherever you find men ruled merely by mystery, it is the mystery of iniquity. If the devil tells you something is too fearful to look at, look at it. If he says something too terrible to hear, hear it. If you think some truth unbearable, bear it."
-- G. K. Chesterton
The Purple Wig in The Father Brown Stories