When she was little, sometimes she had chanted to herself her address as it would appear to a visitor from outer space. Harriet Cleve Dufresnes, 363 George Street, Alexandria, Mississippi, America, Planet Earth, the Milky Way … and the sense of ringing vastness, of being swallowed by the black maw of the universe—only the tiniest white grain in a sprinkling of white sugar that went on forever—sometimes made her feel as if she were suffocating.