Sherif Girgis, a Research Scholar of the Witherspoon Institute, is completing his PhD in philosophy at Princeton and recently completed his JD at Yale Law School, where he served as an editor of the Yale Law Journal. Last year, he clerked for the U.S. Court of Appeals on the Washington, D.C. Circuit. He is coauthor of the book, What Is Marriage? Man and Woman: A Defense, cited by Justice Alito in United States v. Windsor, on which he has spoken at more than 70 lectures, conferences, and debates. His most recent book, coauthored with Ryan Anderson and John Corvino, is Debating Religious Liberty, Tolerance, and Bigotry (Oxford University Press, 2017). Sherif has written on social issues in academic and popular venues, including Public Discourse, National Review, Commonweal, the New York Times, the Yale Law Journal, the Harvard Journal of Law and Public Policy, and the Wall Street Journal. He is a 2008 Phi Beta Kappa and summa cum laude graduate of Princeton, from which he went on to earn a master’s degree in moral, political and legal philosophy from the University of Oxford as a Rhodes Scholar.