Edna Ullmann-Margalit was Professor of Philosophy at the Hebrew University, Jerusalem, and Director of the Center for the Study of Rationality. She was also Chair of the Association for Civil Rights in Israel. She published The Emergence of Norms with Oxford University Press in 1977; a paperback edition was issued in 2016. Avishai Margalit is Professor Emeritus of Philosophy at the Hebrew University of Jerusalem. His books include The Decent Society (Harvard 1996) and On Compromise and Rotten Compromises (Princeton 2010). Cass R. Sunstein is the Robert Walmsley University Professor at Harvard, and founder and director of the Program on Behavioral Economics and Public Policy. From 2009 to 2012, he was Administrator of the White House Office of Information and Regulatory Affairs.