The Ninth Decade is a path-breaking and timely book on aging: the first to focus explicitly and at length on eighty-somethings, the fastest-growing demographic in the industrialized world. Covering eight years in lively six-month installments, Klaus tells a vivid story not only of his own ninth decade and survival routines, but also of his loving companion, Jackie, who is strikingly different from him in her physical well-being, practical outlook,...