This lecture was given to the Dominican House of Studies on February 26, 2021 as part of the second installment of the annual Thomistic Circles series: What is the Common Good? For more information on upcoming events, visit our website at www.thomisticinstitute.org. About the speaker: Russell Hittinger is a graduate of the University of Notre Dame and the University of St. Louis. He was the Warren Chair of Catholic Studies and Research Professor of Law at the University of Tulsa from 1996-2019. Russell has been a member of the Pontifical Academy of St. Thomas Aquinas since 2001 and was appointed an ordinarius in the Pontifical Academy of Social Sciences in 2009 by Pope Emeritus Benedict XVI. He has taught at Fordham University and at the Catholic University of America, as well as at many other universities as a visiting professor, including Providence College and Princeton. Along with a plethora of articles, he has written The First Grace: Rediscovering Natural Law in a Post-Christian Age and A Critique of the New Natural Law Theory.