Walter Sinnott-Armstrong, PhD, is Chauncey Stillman Professor of Practical Ethics at Duke University in the Philosophy Department, the Kenan Institute for Ethics, the Center for Cognitive Neuroscience, and the Law School. He has served as co-chair of the Board of Officers of the American Philosophical Association and co-director of the MacArthur Law and Neuroscience Project. He publishes widely in ethics, moral psychology and neuroscience, philosophy of law, epistemology, informal logic, and philosophy of religion.