I USED TO DREAM about my mother, and though the details in the dream varied, the surprise in it was always the same. The dream stopped, I suppose, because it was too transparent in its hopefulness, too easy in its forgiveness. In the dream I would be the age I really was, living the life I was really living, and I would discover that my mother was still alive. (The fact is, she died when I was in my early twenties and she in her early fifties.) Sometimes I would find myself in our old kitchen, where my mother would be rolling out piecrust on the table, or washing the dishes in the battered cream-colored dishpan with the red rim. But other times I would run into her on the street, in places where I would never have expected to see her. She might be walking through a handsome hotel lobby, or lining up in an airport. She would be looking quite well – not exactly youthful, not entirely untouched by the paralyzing disease that held her in its grip for a decade or more before her death, but so much better than I remembered that I would be astonished.