The principal aim of this book is to develop and defend an analysis of the concept of moral obligation. What it seeks to do is generate new solutions to a range of philosophical problems concerning obligation and its application. Among these problems are deontic paradoxes, the supersession of obligation, conditional obligation, actualism and possibilism, dilemmas, supererogation, and cooperation. By virtue of its normative neutrality, the analysis provides a theoretical framework within which competing theories of obligation can be developed and assessed.