explanation of their diffusion and persistence is to be sought not in the extensive anthropological literature about the origins and functions of religion, but in recent advances in developmental, cognitive and evolutionary psychology. Author and economist Zachary Karabell found stylistic faults. "Boyer's use of cognitive psychology, anthropology and other disciplines does generate a new template for examining old questions. But his method, however compelling, does not save the book from its considerable flaws. To begin with, the writing is frequently impenetrable." He concludes, "Of course, Boyer may be right. Human existence may simply be a story of living, breathing, eating and dying. But by not grappling with the possibility that a nonmaterial realm exists, Boyer has written a book about religion that is occasionally illuminating and utterly unconvincing." The comparative religion author Karen Armstrong reviewed Boyer's thesis. Religion, he argues, is nothing more or less than a by-product of the human mind. It is a side effect of having a particular kind of brain. By far the most fascinating part of this highly accessible and informative book is Boyer's description of the way our minds work. We have an inbuilt set of ontological expectations and a tendency to dwell on intuitions which violate these, such as mountains that float or companions whom we do not see. From the dawn of modern consciousness, men and women have focused on certain imaginary personalities that transcend the norm, convinced that they can help them in strategic ways. These supernatural agents link with other mental systems, such as our moral intuitions and social categories, for which we can find no conceptual justification. John Habgood, formerly Archbishop of York, wrote. This is a bold and far-reaching book. What its author lacks in modesty, he makes up for in cogency of argument and elegance of style. His "explanation" of religion is lucid, entertaining, full of valuable insights and almost, but not quite, convincing. The usual explanations of religion—as an attempt to explain what is otherwise puzzling, as a provider of comfort, as a good thing for society or as an escape from reason—are quickly dismissed. Pascal Boyer seeks to demonstrate that its origins and motivations are more deep seated in our mental structures than any of these, which is why religion is so universal, so powerful and so unlikely to disappear even though, as he also claims, it is in the end only a mental phenomenon.