Cass R. Sunstein is the Robert Walmsley University Professor at Harvard and founder and director of the Program on Behavioral Economics and Public Policy at Harvard Law School. A leading scholar of law, regulation, and behavioral science, he received the 2018 Holberg Prize for his contributions to the humanities and social sciences. From 2009 to 2012, he served as Administrator of the White House Office of Information and Regulatory Affairs, later advising the President’s Review Board on Intelligence and Communications Technologies and the Pentagon’s Defense Innovation Board. He has also chaired the World Health Organization’s Technical Advisory Group on Behavioural Insights and Sciences for Health. The author of hundreds of articles and dozens of books—including Nudge (with Richard H. Thaler), The Ethics of Influence, How Change Happens, and Too Much Information—Sunstein’s most recent work is On Liberalism: In Defense of Freedom (2025).