J. Budziszewski studies the ethical foundations of law, society, and government. He has published numerous books on a variety of topics, most notably centered on the tradition of classical natural law and on Thomas Aquinas.

• I. Man's Ultimate Purpose (Question 1); II. Happiness Itself; A. Where Does Complete Happiness Lie? Failed Candidates (Question 2); B. What Then Is Complete Happiness in Itself, and In What Does It Really Lie? (Question 3); C. Its Attainment; 1. What Complete Happiness Requires (Question 4); 2. How Complete Happiness Is Finally Attained (Question 5).

'Budziszewski's Commentary on Thomas Aquinas's Treatise on Happiness and Ultimate Purpose provides an in-depth, detailed, accessible, and comprehensive commentary on the Summa theologiae's questions on happiness. This commentary is a gem. It can be read with profit by philosophers, theologians, and intellectual historians, as well as by their students. If you are interested in Aquinas, want insight about happiness, or both, this book is for you.' Christopher Kaczor, author of The Gospel of Happiness and Thomas Aquinas on the Cardinal Virtues