This lecture was given on March 19th, 2024, at University of Edinburgh. For more information on upcoming events, visit us at thomisticinstitute.org/upcoming-events About the Speaker: Fr. Reginald Lynch is a Dominican priest of the Province of St. Joseph and is currently an assistant professor of dogmatic and historical theology at the Dominican House of Studies in Washington, DC (USA). His research has focused on a range of issues in historical and dogmatic theology, especially the sacramental theology of Thomas Aquinas. His first book, The Cleansing of the Heart: The Sacraments as Instrumental Causes in the Thomistic Tradition appeared in the Thomistic Ressourcement series at the Catholic University of America Press in 2017. This book examines Aquinas' approach to the efficacy of the sacraments, taking into account relevant textual developments and the implications of Aquinas' account of grace and sanctification in the context of broader developments in medieval theology. His most recent monograph focuses on Aquinas' Eucharistic theology in its original textual and historical context, and the reception history of Aquinas' approach to this subject. This book, Aquinas’s Summa Theologiae and Eucharistic Sacrifice in the Early Modern Period is being published by Oxford University Press in the Changing Paradigms in Historical and Systematic Theology series. Scheduled to appear in early 2024, this volume begins with Aquinas' thought in its medieval textual and historical context, and then proceeds to examine a series of later Dominican and Jesuit receptions of Aquinas' text.