Does human well-being consist in pleasure, the satisfaction of desires, or some set of goods such as knowledge, friendship, and accomplishment? Does being moral contribute to well-being, and is there a conflict between people's self-interest and the moral demands on them? Are the values of well-being and of morality measurable? Are such values objective? What is the relation between such values and the natural world? And how much can philosophical theory help us in our answers to these and similar questions? Issues such as these provide the focus for much of the work of James Griffin, White's Professor of Moral Philosophy at Oxford, in whose honour Well-Being and Morality has been prepared. They are also among the main topics of these fourteen new essays by an international array of leading philosophers. Professor Griffin himself provides a further discussion of central themes in his thought, specially written in response to contributions to this volume.