In Ongoingness, Sarah Manguso continues to define the contours of the contemporary essay as she confronts a meticulous diary that she has kept for twenty-five years. “I wanted to end each day with a record of everything that had ever happened,” she explains. But this simple statement belies a terror that she might forget something, that she might miss something important. Maintaining that diary, now eight hundred thousand words, had become, until recently, a kind of spiritual practice.