In Ongoingness, Sarah Manguso confronts a meticulous diary that she has kept for 25 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 miss something important. When Manguso became pregnant and had a child, these Copernican events generated an amnesia that put her into a different relationship with the need to document herself amid ongoing time. Ongoingness is a spare, meditative work that stands in stark contrast to the volubility of the diary—a haunting account of mortality and impermanence, of how we struggle to find clarity in the chaos of time that rushes around, over, and through us.