Contributor Notes

Weronika Janczuk completed her BA in the philosophy of the human person at New York University in 2013.

Samuel Klumpenhouwer is a PhD candidate at the Centre for Medieval Studies at the University of Toronto. He specializes in medieval canon law, penance, and textual criticism. He is currently working on a critical edition of John of Kent's Summa de penitencia, a manual used by medieval confessors.

David Lutz received his PhD in philosophy from the University of Notre Dame. He taught in Africa (Nigeria, Uganda, and Kenya) for ten years. He is now professor of philosophy and dean of faculty at Holy Cross College, Notre Dame, Indiana.

Fr. Christian Raab, OSB is a Benedictine monk and priest of Saint Meinrad Archabbey. He teaches systematic and sacramental theology at Saint Meinrad Seminary and School of Theology, where he also serves as a formation dean in the seminary and director of the One Bread One Cup College Ministerial Internship Program.

Prof. Msgr. Martin Schlag, JD, STD was ordained in the Prelature of Opus Dei in 1996. He received his doctor theologiae from the Pontifical University Santa Croce in 1998 and from 2008 to 2017 was professor for social moral theology there, as well as cofounder and director of its Research Centre Markets, Culture and Ethics. In 2012, he was appointed as consultant to the Pontifical Council for Justice and Peace. He became a full professor at Santa Croce in 2013. In August 2017, he was appointed professor for Catholic social thought, as the Alan W. Moss endowed chair for Catholic Social Thought at the Center for Catholic Studies, University of St. Thomas (Minnesota), and director of the John A. Ryan Institute for Catholic Social Thought. He is author of more than eighty publications, among them: together with Domènec Melé, Humanism in Economics and Business: Perspectives of the Catholic Social Tradition (New York: Springer 2015); and The Handbook of Catholic Social Teaching: A Guide for Christians in the World Today (2017) and The Business Francis Means: Understanding the Pope's Message on the Economy (2017), both published with The Catholic University of America Press.

Prof. Dr. Manfred Spieker, professor emeritus of Christian social ethics in the Institute for Catholic Theology, University of Osnabrück, Germany, was born in Munich in 1943 and received his DPhil from the University of Munich in 1973. His publications include the following books: Neomarxismus und Christentum: Zur Problematik des Dialogs (2nd ed., 1976); Grundwerte und Menschenbild (1979); Die Demokratie kennt keine Nischen: Christliche Positionen in der Politik (1994); Kirche und Abtreibung in Deutschland: Ursachen und Verlauf eines Konfliktes (2nd ed., 2008); Der verleugnete Rechtsstaat: Anmerkungen zur Kultur des Todes in Europa (2nd ed., 2011); Die Würde des Embryos: Ethische und rechtliche Probleme der Präimplantationsdiagnostik und der embryonalen Stammzellforschung (2012); Benedikt XVI. und die Weltbeziehung der Kirche (2015); and Gender-Mainstreaming in Deutschland (2nd ed., 2016). In 2009, he received the Austrian Cross of Honor for Science and Art, First Class. In 2012, he was appointed as consultant to the Pontifical Council for Justice and Peace. Prof. Spieker is married, with six children.