Berkley Center

José Casanova is one of the world's leading scholars in the sociology of religion and a senior fellow at the Berkley Center, where his work focuses on globalization, religions, and secularization. He is also professor emeritus at Georgetown University, where he previously taught in the Department of Sociology and the Department of Theology and Religious Studies. During 2017 he was the Kluge Chair in Countries and Cultures of the North at the U.S. Library of Congress' John W. Kluge Center, where he worked on a book manuscript on Early Modern Globalization through a Jesuit Prism. He has published works on a broad range of subjects, including religion and globalization, migration and religious pluralism, transnational religions, and sociological theory. His best-known work, Public Religions in the Modern World (University of Chicago Press, 1994), has become a modern classic in the field and has been translated into several languages, including Japanese, Arabic, and Turkish. In 2012, Casanova was awarded the Theology Prize from the Salzburger Hochschulwochen in recognition of his life-long achievement in the field of theology. Casanova is a member of the Working Group on Displaced Persons and Hospitality to the Stranger, part of the Culture of Encounter Project.

Shaun Casey is a senior fellow with the Luce Project on Religion and Its Publics at the University of Virginia and a Pulaski Institution non-resident fellow. He served as director of the Berkley Center for Religion, Peace, and World Affairs and professor of the practice in the School of Foreign Service at Georgetown University from 2017 to 2021. He previously was U.S. special representative for religion and global affairs and director of the U.S. Department of State’s Office of Religion and Global Affairs. He has also served as professor of Christian ethics at Wesley Theological Seminary in Washington, DC, and held positions at the Center for American Progress and the Center for Strategic and International Studies. Casey has written on the ethics of the war in Iraq, as well the role of religion in American presidential politics. He is the author of The Making of a Catholic President: Kennedy vs. Nixon 1960 (2009) and co-editor of The Oxford Handbook of Political Theology (forthcoming, with Michael Kessler); he is writing a book on ethics and international politics tentatively titled Niebuhr’s Children. Casey holds a B.A. from Abilene Christian University, MPA from Harvard Kennedy School, and M.Div. and Th.D. in religion and society from Harvard Divinity School.

Jocelyne Cesari holds the Chair of Religion and Politics and is director of research at the Edward Cadbury Centre for the Public Understanding of Religion at the University of Birmingham, United Kingdom; she is a senior fellow at the Berkley Center for Religion, Peace, and World Affairs at Georgetown University, where she previously was an associate professor of the practice of religion, peace, and conflict resolution in the Department of Government. She is the T. J. Dermot Dunphy Visiting Professor of Religion, Violence, and Peacebuilding at Harvard Divinity School. Former president of the European Academy of Religion, her work on religion, political violence, and conflict resolution has garnered recognition and awards from numerous international organizations such as the Carnegie Council for Ethics and International Affairs and the Royal Society for Arts in the United Kingdom. She is a Professorial Fellow at Australian Catholic University's Institute for Religion, Politics and Society. She teaches on contemporary Islam and politics at Harvard Divinity School and directs the Islam in the West program. Cesari is a member of the Working Group on Displaced Persons and Hospitality to the Stranger, part of the Culture of Encounter Project.

Rev. Andrew (Drew) Christiansen, S.J., was Distinguished Professor of Ethics and Human Development in Georgetown’s School of Foreign Service and a senior fellow at the Berkley Center for Religion, Peace, and World Affairs from 2013 until his death in April 2022. His areas of research included nuclear disarmament, nonviolence and just peacemaking, Catholic social teaching, and ecumenical public advocacy. He was a frequent consultant to the Holy See and a member of the steering committee of the Catholic Peacebuilding Network. He also served on the Atlantic Council's Middle East Task Force and on the Holy See delegation that participated in the negotiation of the Treaty on the Prohibition of Nuclear Weapons during summer 2017.

Ryann Craig is special assistant to the vice president for mission and ministry and director of academic initiatives in Georgetown University's Office of Mission and Ministry. From October 2019 through December 2023 she was the director of student programs and an assistant research professor at the Berkley Center, as well as a faculty fellow at the Center for Social Justice Research, Teaching and Service at Georgetown University. Before joining the Berkley Center, she worked in academic support and student advising as assistant director of academic support at the Catholic University of America. She recently served as a copy editor for the International Qurʾānic Studies Association’s journal and monograph series (2016-2018) and has been involved in a number of religious minority cultural heritage preservation initiatives in the United States, Germany, and Israel/Palestine. Craig completed her Ph.D. (Catholic University of America) on the use of Quranic proof texts by medieval Christian Arabic and Syriac authors while in residence as a doctoral fellow at the Tantur Ecumenical Institute in Jerusalem. She is co-editor with Vasile-Octavian Mihoc of A Contested Coexistence: Insights in Arabic Christianity from Theology to Migration (Harrassowitz, 2020).

Rev. David Hollenbach, S.J., is the Pedro Arrupe Distinguished Research Professor in the Walsh School of Foreign Service; a senior fellow at the Berkley Center for Religion, Peace, and World Affairs; and an affiliated professor in the Department of Theology and Religious Studies at Georgetown University. His teaching and research deal with human rights, religious and ethical responses to humanitarian crises, and religion in political life from the standpoint of Catholic social thought, theology, and the social sciences. His books include Human Rights in a Divided World: Catholicism as a Living Tradition (2024), Humanity in Crisis: Ethical and Religious Response to Refugees (2019), Driven from Home: Protecting the Rights of Forced Migrants (2010) The Global Face of Public Faith: Politics, Human Rights, and Christian Ethics (2003), and The Common Good and Christian Ethics (2002). He has taught often at Hekima University College in Nairobi, Kenya, and he collaborates with Jesuit Refugee Service. From 2020 to 2022 he is a distinguished research associate with the Kellogg Institute for International Studies at the University of Notre Dame. Hollenbach is also a research associate with the Jesuit Center for Theological Reflection in Zambia. Hollenbach is a member of the Working Group on Displaced Persons and Hospitality to the Stranger, part of the Culture of Encounter Project.

Michael Kessler is executive director of the Berkley Center for Religion, Peace, and World Affairs at Georgetown University, a professor of the practice of moral and political theory in the Department of Government, and an adjunct professor of law at Georgetown Law. Kessler’s research and writing focus on theology, philosophical and religious ethics, and social, political, and legal theory. He is interested in problems of law and religion, both globally and in the U.S. constitutional context. Kessler is the author of several edited volumes, including The Oxford Handbook of Political Theology, co-edited with Shaun Casey (Oxford University Press, forthcoming); Political Theology for a Plural Age (Oxford University Press, 2013); and Mystics: Presence and Aporia, co-edited with Christian Sheppard (University of Chicago Press, 2003). He also wrote “Engaging Religion in U.S. Foreign Affairs,” a chapter in the Companion to Religion and Politics in the United States (Wiley-Blackwell, 2016). Kessler is a member of the Working Group on Displaced Persons and Hospitality to the Stranger, part of the Culture of Encounter Project.

Katherine Marshall, a senior fellow at Georgetown University’s Berkley Center for Religion, Peace, and World Affairs, leads the center’s work on religion and global development. She is also a professor of the practice of development, conflict, and religion in the Walsh School of Foreign Service, teaching diverse courses on the ethics of development work and mentoring students at many levels. She helped to create and now serves as the executive director of the World Faiths Development Dialogue, an NGO that works to enhance bridges between different sectors and institutions. In September 2022, she was appointed as a member of the Advisory Committee on Voluntary Foreign Aid at the U.S. Agency for International Development. Marshall has five decades of experience on a variety of development issues in Africa, Latin America, East Asia, and the Middle East, particularly those facing the world’s poorest countries; one way she shares her expertise is through her blog Faith in Action. She was a World Bank officer from 1971 to 2006, and she led the World Bank’s faith and ethics initiative between 2000 and 2006. Marshall is a member of the Working Group on Child Rights and Family Values and the Working Group on Displaced Persons and Hospitality to the Stranger, both part of the Culture of Encounter Project.