"The best-selling novelist and memoirist delivers her most intimate and powerful work: a piercing, life-affirming memoir about marriage and memory, about the frailty and elasticity of our most essential bonds, and about the accretion, over time, of both sorrow and love. Hourglass is an inquiry into how marriage is transformed by time--abraded, strengthened, shaped in miraculous and sometimes terrifying ways by accident and experience. With courage...