This book collects Thomas Nagel's recent philosophical reflections on topics of fundamental interest: ethics, moral psychology, science and religion, death, the holocaust, and the metaphysics of mind. The essays are all addressed to a general audience and should appeal not only to philosophers but to anyone interested in current attempts to understand human life, human values, and how we fit into the world. Among the figures discussed are Peter Singer, Alvin Plantinga, Christine Korsgaard, Tony Judt, Elizabeth Anscombe, Philippa Foot, Iris Murdoch, T. M. Scanlon, Ronald Dworkin, Daniel Kahneman, Jonathan Haidt, Joshua Greene, and Daniel Dennett. An accessible overview of some of the significant philosophy of our time.