Now imagine two groups of people—let’s call them the secular tribe and the religious tribe—who subscribe to these two worldviews. Which of the two tribes is more likely tosurvive, prosper, and multiply? The religious tribe is made up of people who have an animating sense of purpose. The secular tribe is made up of people who are not sure why they exist at all. The religious tribe is composed of individuals who view their every thought and action as consequential. The secular tribe is made up of matter that cannot explain why it is able to think at all.

Should evolutionists like Dennett, Dawkins, Pinker, and Wilson be surprised, then, to see that religious tribes are flourishing? Throughout the world, religious groups attract astounding numbers of followers and religious people are showing their confidence in their way of life and in the future by having more children. By contrast, atheist conventions draw only a handful of embittered souls. One of the largest atheist organizations, American Atheists, has around 2,500 members. Throw a stone in the faculty parking lot of an elite American or European university and you have a good chance of hitting an atheist. But throw a stone anywhere else and you really have to aim.

The important point is not just that atheism is unable to compete with religion in attracting followers, but also that the lifestyle of practical atheism seems to produce listless tribes that cannot even reproduce themselves. Sociologists Pippa Norris and Ron Inglehart note that many richer, more secular countries are “producing only about half as many children as would be needed to replace the adult population” while many poorer, more religious countries are “producing two or three times as many children as would be needed to replace the adult population.” The consequence, so predictable that one might almost call it a law, is that “the religious population is growing fast, while the secular number is shrinking.”