In this comprehensive anthology, twenty-seven outstanding scholars from North America and Europe address every major aspect of Thomas Aquinas's understanding of morality and comment on his remarkable legacy. While there has been a revival of interest in recent years in the ethics of St. Thomas, no single work has yet fully examined the basic moral arguments and content of Aquinas' major moral work, the Second Part of the Summa Theologiae. This work fills that lacuna. The first chapters of The Ethics of Aquinas introduce readers to the sources, methods, and major themes of Aquinas's ethics. The second part of the book provides an extended discussion of ideas in the Second Part of the Summa Theologiae, in which contributors present cogent interpretations of the structure, major arguments, and themes of each of the treatises. The third and final part examines aspects of Thomistic ethics in the twentieth century and beyond. These essays reflect a diverse group of scholars representing a variety of intellectual perspectives. Contributors span numerous fields of study, including intellectual history, medieval studies, moral philosophy, religious ethics, and moral theology. This remarkable variety underscores how interpretations of Thomas's ethics continue to develop and evolve―and stimulate fervent discussion within the academy and the church. This volume is aimed at scholars, students, clergy, and all those who continue to find Aquinas a rich source of moral insight. "Pope has assembled an impressive range of contributors to provide the most complete and authoritative commentary on the ethics of Thomas Aquinas. An indispensable resource for moral theologians and philosophers. A landmark volume."― Theological Studies "This book addresses a wide audience of experts and others who are interested in Aquinas and in ethics. This is an important contribution and should be present in any serious theological library."― Catholic Library World "Particularly timely . . . this work will address an imbalanced impression that those with only limited exposure to Aquinas may have."― Theology Today "A must have for every theology library and an invaluable resource for moral theologians, philosophers and students alike. Pope has gathered some of the best Thomistic scholars and ethicists in Europe and America to contribute to this book."― Horizons "A remarkable set of in-depth background essays by scholars of erudition, balanced judgement, and clarity of thought....This is a rich and unparalleled resource for scholars of theological ethics."―Lisa Sowle Cahill, Monan Professor of Theology, Boston College Stephen J. Pope is a professor in the Boston College Department of Theology. His books include The Evolution of Altruism and the Ordering of Love (Georgetown University Press, 1994).