David Rose of the University of Missouri, St. Louis and the author of The Moral Foundation of Economic Behavior talks with EconTalk host Russ Roberts about the book and the role morality plays in prosperity. Rose argues that morality plays a crucial role in prosperity and economic development. Knowing that the people you trade with have a principled aversion to exploiting opportunities for cheating in dealing with others allows economic actors to trust one another. That in turn allows for the widespread specialization and interaction through markets with strangers that creates prosperity. In this conversation, Rose explores the nature of the principles that work best to engender trust. The conversation closes with a discussion of the current trend in morality in America and the implications for trust and prosperity.