Heidi Ann Russell, PhD, is an associate professor at the Institute of Pastoral Studies of Loyola University Chicago. She received her PhD in religious studies from Marquette University and her MDiv/MA from Washington Theological Union. She is the author of several other books, including The Source of All Love: Catholicity and the Trinity (Orbis Books, 2017) and Quantum Shift: Theological and Pastoral Implications of Contemporary Developments in Science (Liturgical Press, 2015).