Richard Dawkins, a leading evolutionary biologist and author of many now-classic works of science and philosophy, has always stated unequivocally that belief in God is an irrationality that has caused many social ills. In this book, he offers a fierce critique of the idea of God in all its forms, from the sex-obsessed, callous tyrant of the Old Testament to the more mild, yet also irrational, Celestial Watchmaker preferred by some Enlightenment thinkers. He dismantles the main arguments in favor of religion and demonstrates that the existence of a supreme being is an absolutely unlikely possibility. He describes how religion fuels war, fosters intolerance, and abuses the minds and souls of children. (...) [Excerpt from publisher or edition presentation text]