The Significance and Complexity of Conscience

The concept of conscience continues to play a central role in our ethical reasoning as well as in public and philosophical debate over medical ethics, religious freedom, and conscientious objection in many fields, including war. Despite this continued relevance the nature of conscience itself has remained a relatively neglected topic in recent philosophical literature. In this paper I discuss some historical background to the concept and outline the essential features required for any satisfactory account of conscience and its significance for a coherent moral psychology. It will become clear that conscience is a complex concept resisting reduction to any one of its component features. In doing so I critique recent accounts of conscience which have been insufficiently attentive to these complexities and as a consequence have drawn mistaken conclusions about the legitimate role of conscience in moral reasoning. I also discuss the significance of various distortions of conscience such what I call “the fanaticised conscience”. Clarifying our concept of conscience helps us avoid both conceptual confusion in moral psychology and misapplications of the concept in our understanding of conscientious objection both theoretically and in practice.