Robin Dunbar is Professor of Evolutionary Psychology at the University of Oxford, an Emeritus Fellow of Magdalen College, Oxford, and an elected Fellow of the British Academy. His principal research interests focus on the evolution of sociality (with particular reference to primates and humans). He is best known for the social brain hypothesis, the gossip theory of language evolution and Dunbar’s Number (the limit on the number of relationships that we can manage). His publications include 15 authored or edited academic books and nearly 550 scientific journal articles. In addition, he has published a great deal of science print journalism in newspapers and magazines, and 11 popular science books, including The Trouble With Science, Grooming, Gossip and the Evolution of Language, The Human Story, Evolutionary Psychology: A Beginner’s Guide [with L. Barrett and J. Lycett], How Many Friends Does One Person Need?, The Science of Love and Betrayal, Thinking Big [with C. Gamble and J. Gowlett], Human Evolution, and Evolution: What Everyone Needs to Know.