Religious faith is under assault. In books and movies and on television, militant secular critics attack religion with a renewed vigor. These “new atheists” repeat a two-part mantra: that religious faith is hopelessly irrational and that those possessed of such faith are responsible for the hatred and bloodshed that has plagued humanity. Abandon religion, they urge us, and the world will at last live in peace. In Defense of Faith examines this proposition in the context of...