There's a strange sensation - you recall it from childhood - about sleeping in the afternoon. You rise into a different world from the one in which you lay down. The shadows have been rearranged. There's a sensation of sad sweetness, as if something has been overlooked. I used to feel it coming out of the movies just before dinnertime, after the matinee. How, I wondered, did Broadway actors face it, this bittersweet sense of time's slipping past.