What drives good behavior? It could be the satisfying feeling of helping others or, in many cases, there are even more alluring incentives to do the right thing. Is the value of goodness lessened when there is a reward involved? Host Frank Stasio talks about the many motivations for being good, being evil and finding the balance in between with , a professor of political science and philosophy at Duke University and a senior fellow at the Kenan Institute for Ethics and author of "Strings Attached: Untangling the Ethics of Incentives" (Princeton University Press/2011); , dean of Duke University Chapel and a research professor of Christian ethics at Duke Divinity School; and , a Durham-based novelist. Listener Call-in.