In recent years attention has been redirected to the significance of the ethical rule that “good should be done and evil avoided.” It may be called the synderesis rule or principle, since in its most influential presentation it was associated by Thomas Aquinas with the intellectual habit called synderesis. In 1965 Germain Grisez published an article on this subject which attracted much interest in America and England. He argued that the principle as found in Aquinas’s treatise on laws in the (...) Summa of Theology has been misinterpreted in the common Scholastic tradition. In particular Grisez maintained that the common interpretation is wrong in restricting the good and evil, as used in this formula, to the moral order. Further, he suggested that the SR does not have the obligatory force of an imperative. (shrink)

It is usual to classify the moral thinking of St. Thomas Aquinas as a theory of natural law. The purpose of the present article is to challenge such a classification. While the notion of natural law does play a part in Aquinas’s teaching on morality, this does not seem to me to be a central role. Indeed there are many reasons why it might be better, today, to stop talking about natural moral law, both in the context of Thomistic philosophy (...) and in the broader context of contemporary ethics. What I now advocate is the position that right reason is the key theme in the ethics of Aquinas. (shrink)