Central Park, with its granite outcroppings, its pond, its brown grass, and wet black ginkos was, in late January, a charcoal sketch. An occasional red scarf, a yellow nylon parka, was the only color that winter afternoon. The rest was pale gray, sandpaper black, and cola-stained snow. But it was a pleasant little hike through the park's south end to the west side. It must have been past three o’clock by then. The sun was in the latticed branches, spoking the brindled lawns with quick black strokes. I didn’t want to look at my watch. Far away, on the unseen perimeters of the landscape, a closely woven tapestry of tiny voices, kids released from school, was unraveling; bright threads of giggles, shouts, broke loose and drifted through the park. I stopped at a bench near the pond. There a boy under the fond gaze, and watchful shadow, of his young mother, stood throwing little clots of snow into the brightly cold and rippling water. With each splash, the boy’s excitement grew, his mo...