Simone de Beauvoir’s account of the last ten years of Jean-Paul Sartre’s life provides a focus for understanding one of the greatest thinkers of the twentieth century. But the book, consisting of both a year-by-year account of Sartre’s last decade and a conversation between him and de Beauvoir about his life and work, is more than just a philosophical examination. It is also a personal dialogue of astonishing frankness that illuminates one of the most famous and complex relationships of the twentieth century.