We live in a time of atheist triumphalism. Richard Dawkins, Christopher Hitchens and Sam Harris are best-sellers. They are on a roll, witty, ebullient, confident—far more so than those Christians who take them on. Consider that debate not so long ago in London, in the Methodist Central Hall, Westminster. The subject was: “Are We Better Off Without Religion?” A couple of thousand Londoners turned up on a cold night to listen and vote. On the anti-religious side was Richard Dawkins. “Christians are idiots!” he proclaimed. Then Professor A.C. Grayling pronounced: “Religion never did anybody any good! Ever!” Finally along came…