The second edition of Aquinas, On Law, Morality, and Politicsretains the selection of texts presented in the first edition but offers them in new translations by Richard J. Regan--including that of his Aquinas, Treatise on Law (Hackett, 2000). A revised Introduction and glossary, an updated select bibliography, and the inclusion of summarizing headnotes for each of the units--Conscience, Law, Justice, Property, War and Killing, Obedience and Rebellion, and Practical Wisdom and Statecraft€"further enhance its usefulness.