Herbert Gintis holds faculty positions at the Santa Fe Institute and Central European University. He is the author of "Game Theory Evolving" (Princeton), coauthor of "A Cooperative Species: Human Reciprocity and Its Evolution" with Samuel Bowles (Princeton), and the coeditor of numerous books, including "Moral Sentiments and Material Interests", "Unequal Chances" (Princeton), and "Foundations of Human Sociality".