“The major problem with the invitation now is precisely overfamiliarity. Familiarity breeds unfamiliarity—unsuspected unfamiliarity, and then contempt. People think they have heard the invitation. They think they have accepted it—or rejected it. But they have not. The difficulty today is to hear it at all. Genius, it is said, is the ability to scrutinize the obvious. Written everywhere, we may think, how could the invitation be subtle, or deep? It looks like the other graffiti and even shows up in the same places. But that is part of the divine conspiracy.”