The consideration of normative ethics and methodology is a relatively recent phenomena in Catholic moral theology. Similar to any nascent discussion, having adopted terms and concepts from one conceptual genre, Britisch-analytic philosophy, into a radically other genre, Catholic moral theology, one then needs to begin the work of clarifying how, and to what extent, those terms and concepts contribute to the overall project of moral theology as a science. As Pope John Paul II's encyclical Veritatis Splendor attests, this incorporation has met with a great deal of resistance based on misunderstandings of the nature and purpose of normative ethics and methodology. Deontology and Teleology is a pioneer account which exposes and clarifies many of the terminological and conceptual ambiguities inherent to this discussion. It begins with an investigation of C.D. Broad's meta-ethical division of theories into deontology and teleology, and the epistemological/ontological foundations on which he established this division.An analysis of how and why Broad's theory has been incorporated into Catholic discussions on the foundation and formulation of norms along with the inherent difficulties of such an incorporation is then taken up. Finally, this study argues and substantiates through detailed historical analysis that a fundamental difference between traditionalists and revisionists in their relative perspectives on norms rest in the traditional understanding and moral evaluation of the human act, specifically, the objectum, circumstantiae and finis (fontes moralitates). This is an indispensable resource work for those interested in fundamental moral theology and lays the foundation for pursuing further the complex question of normative ethics in Catholic moral theology.