Matthew A. Shadle is Associate Professor of Theology and Religious Studies at Marymount University in Arlington, Virginia. He received his B.A. in Religion from Hendrix College in Conway, Arkansas, and his M.A. and Ph.D. in Theology from the University of Dayton, in Dayton, Ohio. He has published The Origins of War: A Catholic Perspective (Georgetown, 2011) and “No Peace on Earth: War and the Environment” in Green Discipleship: Catholic Theological Ethics and the Environment, edited by Tobias Winright (Anselm Academic, 2011). His work focuses on the development of Catholic social teaching and its intersection with both fundamental moral theology and the social sciences, with special focus on war and peace, the economy, and immigration. He is married and lives in Woodbridge, Virginia.