Ever since "Know Thyself" was inscribed at Delphi, Western philosophers have struggled to understand the relations between morality and self-interest. This edited volume of essays pushes forward one of the oldest and most important debates in philosophy. Is morality a check on self-interest or is it in one's self interest to be moral? Can morality and self-interest be understood independently of each other?Christopher Morris, The Trouble With JusticeMathias Risse, Nietzsche on Selfishness, Justice, and the Duties of the Higher MenRichard Joyce, Morality, SchmoralityDavid Schmidtz, Because It's RightThomas Nagel, The Value of InviolabilitySamuel Scheffler, Potential CongruenceStephen Finlay, Too Much MoralityTerence Irwin Scotus and the Possibility of Moral MotivationRalph Wedgwood, Butler on Virtue, Self Interest, and Human NatureJulia Annas, Virtue Ethics and the Charge of EgoismW.D. Falk, Morality, Self, and OthersPaul Bloomfield, Why It's Bad To Be BadJoel Kupperman, Classical and Sour Forms of VirtueMichael Stocker, Shame and Guilt; Self Interest and Morality