In order for a moral theory to support application it must be able to provide determinate answers to actual moral problems or, at the least, to significantly narrow acceptable options. It must also support the development of a genuine consensus, one that is disinterested, reasonable, and unbiased. I argue that theories concentrating on principles, or on rules, or on particular cases fail to meet these standards. A full coherence theory, taking into account principles, rules, practices, and judgments holds the greatest promise for successful application. I present a detailed outline of a full coherence theory that is principled, pluralistic, and comprehensive. This coherence theory includes three basic principles (expressed both negatively and positively), but binds these, in terms of their explication and application, to rules and practices. This theory respects current practices but also directs us to change practices and institutions and even the interpretations of basic moral principles. The theory includes ways to determine which aspect of moral experience should take precedence in given circumstances, ways to determine who has particular obligations, and how--by means of a mutuality principle--value may be enhanced under conditions of value conflict.