It's hard to figure out what pain might turn out in the future to be just ordinary, garden-variety pain, and which one prelude to the great happiness or unhappiness a fortune- teller long ago said was surely ahead. But should knowing change the texture or feeling of each instance, or draw a brighter intensity around itself? When you look back, you realize how cool the grass felt against the soles of your feet, how blue the sheen of snail shell on a leaf; how quiet the moon's rising so that a clock striking the hour on a steeple was merely repeating the only numbers it knew— not a knell calling in all the boats, all the birds come back to roost, all the fading pleasures of the world.