David A. Hollinger is Preston Hotchkis Professor of History Emeritus at the University of California at Berkeley. His recent books include Protestants Abroad: How Missionaries Tried to Change the World but Changed America (Princeton, 2017), After Cloven Tongues of Fire: Protestant Liberalism in Modern American History (Princeton, 2013), and When This Mask of Flesh is Broken (Outskirts Press, 2019). His most relevant recent article is “The Global South, Christianity, and Secularization: Insider and Outsider Perspectives,” in Modern Intellectual History (2020).