Stephen R. Kellert was the Tweedy/Ordway Professor of Social Ecology at the Yale School of Forestry and Environmental Studies and author of numerous books including, The Biophilia Hypothesis (coedited with E. O. Wilson, 1993), The Value of Life: Biological Diversity and Human Society (1996), Kinship to Mastery: Biophilia in Human Evolution and Development (1997), The Good in Nature and Humanity: Connecting Science, Religion, and Spirituality with the Natural World (coedited with T. Farnham, 2002), and Children and Nature: Psychological, Sociocultural, and Evolutionary Investigations (coedited with P. H. Kahn, 2002).