When [Sartre] demands that we take responsibility for our lives, for the shape of our world, for the situation of the least favored--for others as well as ourselves--he is expressing decisively important conditions for learning to live as responsible citizens in this globalized world. This is no outmoded radicalism, but the message of one of the most challenging and contemporary philosophies. --Ronald Aronson, International Herald Tribune Like no one else, [Sartre] sought to understand exactly what it means to be responsible. --Ronald Aronson, International Herald Tribune In this small book, we discover Sartre as more than the cafe existentialist or the playboy. Here we see the committed philosopher working in public, with many of its evident hazards. Despite its flaws, in Existentialism is a Humanism, we have a model for a committed philosophy--one that is sorely needed today. --Nicholas Hengen, Rain Taxi To understand Jean-Paul Sartre is to understand something important about the present time. --Iris Murdoch