Is there any difference between Christian ethics and philosophical ethics? Does Christian faith change the content of ethical theory for believers? This book attempts to understand the troubling nature of the question and the importance of an answer that depends less on ethical systems than on ethical activity. The book uses Bernard Lonergan's turn to the human subject as a foundational point for understanding ethical reasoning. By also engaging the insights of language philosophy, the work demonstrates the uniqueness of Christian ethics and its openness to sharing its truths with all other traditions.