Harvard economist Benjamin Friedman's book, 'Religion and the Rise of Capitalism,' provides an illuminating, if not always convincing, examination of how theology influenced modern economic thought.“One of the fundamental elements of the spirit of modern capitalism,” German sociologist Max Weber wrote in his landmark 1905 book, The Protestant Ethic and the Spirit of Capitalism, “of rational conduct on the basis of the idea of the calling, was born from the spirit of Christian asceticism.”Weber attributed the free-market success so prevalent amongst Protestant societies to its origins in Calvinist predestinarian theology: believers could never know for sure whether they had been...