Thomas Nagel's lecture at the Holberg Prize Symposium 2007. The Symposium was in honor of Holberg Prize laureate 2007 Ronald Dworkin. Thomas Nagel is Professor of Law and Professor of Philosophy. He specializes in Political Philosophy, Ethics, Epistemology, and Philosophy of Mind. He is a Fellow of the American Academy of Arts and Sciences and a Fellow of the British Academy, and has held fellowships from the Guggenheim Foundation, the National Science Foundation, and the National Endowment for the Humanities. He is the author of The Possibility of Altruism (Oxford, 1970, reprinted Princeton, 1978), Mortal Questions (Cambridge, 1979), The View From Nowhere (Oxford, 1986), What Does It All Mean?(Oxford, 1987), Equality and Partiality (Oxford, 1991), Other Minds (Oxford, 1995), The Last Word (Oxford, 1997), The Myth of Ownership: Taxes and Justice (with Liam Murphy) (Oxford, 2002), and Concealment and Exposure (Oxford, 2002). Less