It may happen to any of us at any moment. In the twinkling of an eye, in a time too small to be measured, and in any place, all that seems to divide us from God can flee away, vanish leaving us naked before Him, like the first man, like the only man, as if nothing but He and I existed. And since that contact cannot be avoided for long, and since it means either bliss or horror, the business of life is to learn to like it. That is the first and great commandment.
