Sociologists Peter Berger and Grace Davie report that “most sociologists of religion now agree” that the secularization thesis—that religion declines as a society becomes more modern—“ has been empirically shown to be false.” Most striking of all are the demographic studies that predict that it is not religious populations but secular ones that are in long-term decline. The April 2015 Pew study projects that the percentage of atheists, agnostics, and the religiously unaffiliated will slowly but steadily decline, from 16.4 percent of the world’s population today to 13.2 percent forty years from now. University of London professor Eric Kaufmann, in his book Shall the Religious Inherit the Earth?, speaks of “the crisis of secularism” and argues that the shrinkage of secularism and liberal religion is inevitable.