Contributor(s): John Micklethwait, Professor John Gray | The global revival of religion has been predominantly fuelled by the creation of a religious free market defined by entrepreneurship, choice and personal revelation. So can religion and the market sit together and what can economics teach us about religion? John Gray is emeritus professor of European thought at LSE and author of Gray's Anatomy. John Micklethwait is editor of The Economist and co-author of God is Back.