An introduction to Catholic moral theology, including the fundamental theological meaning of the moral life, a brief survey of the history of Catholic moral thought, the sources of moral knowledge and action: reason, faith, and the role of the magisterium; freedom and law; conscience, virtue, grace and sin; and the elements of moral action - object, intention, and circumstances. Particular attention will be given to the teaching of the 1993 Encyclical Letter Veritatis splendor.