Let’s begin with a story. Or two. Once upon a time, a young man went to his rabbi and said: “Rabbi, you know I’ve been a pious Jew all my life. But something has changed. When I was a child, I felt very close to God. But now that I’m older, it seems as if God has left me. I go about my daily business, I say my prayers, but I no longer feel God near me.” The rabbi smiled, as though he’d heard the problem stated many times before. “You may be certain God has not left you, my friend,” he answered kindly. “When you teach a child to walk, at first you stand very close. The child can take just one step, so you must catch him. But as he grows, you move farther and farther away, so that he can walk to you. God has not abandoned you. Like a good parent, God has moved farther away, but is still close by, waiting for you. Now...