Nicholas Humphrey, Emeritus Professor of Psychology at the London School of Economics and Bye Fellow at Darwin College, Cambridge, has made a lifelong study of the evolution of intelligence and consciousness. He was the first to demonstrate the existence of "blindsight" in monkeys. He studied mountain gorillas with Dian Fossey in Rwanda, proposed the celebrated theory of the "social function of intellect," and has investigated the evolutionary background of religion, art, healing, death-awareness, and suicide. His honors include the Martin Luther King Memorial Prize, the Pufendorf Medal, and the Mind and Brain Prize. His recent books include Seeing Red, Soul Dust, and Sentience (MIT Press).