In the global marketplace of ideas, few realms spark as much conflict as religion. For millions of people, it is an integral part of everyday life, reflected by a widely divergent supply of practices and philosophical perspectives. Yet, historically, the marketplace has not always been...

This paper seeks to explain the initial successes and failures of Protestantism on economic grounds. It argues that the medieval Roman Catholic Church, through doctrinal manipulation, the exclusion of rivals, and various forms of price discrimination, ultimately placed members seeking the Z good...