God Is Not Great: How Religion Poisons Everything is a bestselling 2007 book by British-American author and journalist Christopher Hitchens, presenting a polemical critique of organized religion. Hitchens argues that religion has been a source of conflict, repression, and falsehood throughout history, drawing on examples from major world religions including Christianity, Islam, Judaism, Hinduism, and Buddhism. He contends that religious doctrines are man-made inventions that poison human society by promoting violence, sexual repression, and distortions of scientific understanding, while advocating for atheism and secular humanism as rational alternatives. The book became a bestseller, sparking widespread debate and positioning Hitchens as a key figure in the New Atheism movement alongside authors like Richard Dawkins and Sam Harris. It was published in the UK by Atlantic Books as God Is Not Great: The Case Against Religion and in the US by Twelve (an imprint of Hachette Book Group) with the subtitle How Religion Poisons Everything; a 2017 UK reissue omitted the subtitle. The work received praise for its wit and erudition but criticism for oversimplifying religious texts and lacking academic rigor, with some reviewers accusing Hitchens of cherry-picking examples to fit his thesis.