The things we do today may make life worse for future generations. But why should we care what happens to people who won't be born until after all of us are gone? Some philosophers have treated this as a question about our moral responsibilities, and have argued that we have duties of beneficence to promote the well-being of our descendants. Rather than focusing exclusively on issues of moral responsibility, Samuel Scheffler considers the broader question of why and how future generations matter to us. Although we lack a developed set of ideas about the value of human continuity, we are...