"The truth is, there is not a person on Earth who has a good reason to believe that Jesus rose from the dead or that Muhammad spoke to the angel Gabriel in a cave. And yet billions of people claim to be certain about such things. As a result, Iron Age ideas about everything high and low — sex, cosmology, gender equality, immortal souls, the end of the world, the validity of prophecy, etc. — continue to divide our world and subvert our national discourse. Many of these ideas, by their very nature, hobble science, inflame human conflict and squander scarce resources."