In this book, Harris makes the compelling argument that human beings can no longer afford the luxury of major religious belief systems. In a world in which we now have the capacity to kill millions of humans at one time, belief systems that are intolerant of non-believers and emphasize life in the hereafter over the present are simply too dangerous.
Harris claims that even moderate members of a religion are to blame for extreme acts committed in the name of their faith, because the moderates help to legitimize the acceptance of beliefs that can be easily used to support violence. His arguments cut to the heart of the concept of faith itself, and will be unpalatable to many. But Harris does not seem to be advocating a switch to an atheist or even agnostic view. He is primarily against subscribing to unexamined beliefs. As an alternative, he offers a discussion of a rational, experience-based spirituality that has some links to Buddhism. This is a highly provocative book that offers many important ideas to the debate about the role of religion in modern life.