" The first half of the book, describing how and why religions evolved, was fascinating, engaging, and well-researched, with contradictory theories presented, and his reasons for preferring one over the other well-explained. The second half, describing his conclusions, was vastly less so. He dismissed studies backed up by evidence without either refuting those studies or providing evidence for his own counter theories. He also blatantly contradicted himself--for example, earlier in the book, he states that hell is a fairly recent addition to religion. Later on, he states that it's impossible for humans to be moral without a fear of hell and that those who don't believe in hell are only moral because of peer pressure from those around them who do. I would not be at all surprised to find that the book was written by two different authors. "
— Darla, 9/3/2013