This appraisal of two of the most fundamental terms in the moral language of Thomas Aquinas draws on the contemporary moral distinction between the goodness of a person and the rightness of a person's living. Keenan thus finds that Aquinas's earlier writings do not permit the possibility of such a distinction. But in his mature works, specifically the Summa Theologiae , Thomas describes the human act of moral intentionality, and even the virtues in...