Distinguished Professor of Biological Sciences and Anthropology at Binghamton University, State University of New York, David Sloan Wilson has been described as one of the most creative theoreticians in evolutionary studies. His book (with Elliott Sober), Unto Others: The Evolution and Psychology of Unselfish Behavior (1998), is a radical revision of the theory of altruism that rejects the idea that natural selection must operate directly only on individuals. Through a rigorous technical analysis of both biological and epistemological questions, he shows that species may evolve altruistic behavior provided that the frequency of altruistic types within groups has an effect on the contribution of the group as a whole to the next generation of the species. A magna cum laude graduate of the University of Rochester, Dr. Wilson earned his Ph.D. in zoology at Michigan State University in 1975. He did further research at Harvard, the University of Washington, and the University of the Witwatersrand before joining the staff of South Africa’s National Research Institute for Mathematical Sciences as a senior research officer in 1976. He moved on the next year to the University of California/Davis and then back to Michigan State as assistant professor of zoology. Promoted to associate professor in 1982, he joined the Binghamton faculty six years later as professor of biological sciences, a post he held until being named to his present chair in 2006. Dr. Wilson is a former Guggenheim Fellow and also has received research support from the National Science Foundation, the United States Department of Energy, and the John Templeton Foundation. Formerly vice president of the American Society of Naturalists, he currently serves on the editorial board of Human Behavior and the Evolution Society. In addition to Unto Others and nearly two hundred research articles published in scientific journals, he is the editor (with Jonathan Gottschall) of The Literary Animal: Evolution and the Nature of Narrative (2005), and the author of The Natural Selection of Populations and Communities (1980), Darwin’s Cathedral: Evolution, Religion and the Nature of Society (2002), and, most recently, Evolution for Everyone: How Darwin’s Theory Can Change the Way We Think About Our Lives, which was published by Delacorte Press in 2007.