Modern philosophy has long dismissed the traditional moral notion that some actions are inherently good or evil, claiming rather that actions lack clear boundaries and have no set nature, whether good, evil, or anything else. We might expect to find resources to rebut these consequentialist assertions in the perennial philosophy of St. Thomas Aquinas. Unfortunately, the analysis of the moral species within Aquinas confounds even the most resolute. Thomists are far from unanimity on the very questions at issue, such as the role of intention in moral judgment and the importance of the exterior...

Living the Good Life presents a brief introduction to virtue and vice, self-control and weakness, misery and happiness. The book contrasts the thought of Aquinas with popular views, such as moral relativism, values clarification, utilitarianism, Kantian deontology, and situation ethics. Following the Socratic dictum ""know thyself,"" Steven J. Jensen investigates the interior workings of the human mind, revealing the interplay of reason, will, and emotions. According to Aquinas, in a healthy ethical life, reason guides the emotions and will to the true human good. In an unhealthy life,...

Recent discussions of Thomas Aquinas's treatment of natural law have focused upon the ""self-evident"" character of the first principles, but few attempts have been made to determine in what manner they are self-evident. On some accounts, a self-evident precept must have, at most, a tenuous connection with speculative reason, especially our knowledge of God, and it must be untainted by the stain of ""deriving"" an ought from an is. Yet Aquinas himself had a robust account of the good, rooted in human nature. He saw no fundamental difference between is-statements and ought-statements, both of...