" More rooted in logic was the silence of God. In the world there was evil and much of it resulted from doubt, from an honest confusion among men of good will. Would a reasonable God refuse to end it? Not finally reveal Himself? Not speak? “Lord, give us a sign…” The raising of Lazarus was dim in the distant past. No one now living had heard his laughter. And so why not a sign? "

― William Peter Blatty , The Exorcist