This scarce early work is both expensive and hard to finding its first edition. It is a fascination read for any atheist or theologian, but also contains much information that is still useful and interesting today. A thorough and detailed argument in favour of atheism that is written by an industrious and scrupulous author. Contents: The evolution of religious beliefs; The Koran, the Old and New Testaments; The prophets Mohammed, Jesus and Moses charlatans or victims of mental and physical disease; Soundness of a foundation for a belief in a deity; The persistence of religion; Religion and science; Religion and medicine; Religion and astronomy; Religion and geography; Religion and chemistry and physics; Religion and geology, philology and evolution; Religion and witchcraft; Religion and morality; Christianity and war; Christianity and slavery; Christianity and labor; Religion and woman; The philosophers and the great illusion; The doom of religion -- the necessity of atheism; Contemporary opinion. Many of the earliest books, particularly those dating back to the 1900s and before, are now extremely scarce and increasingly expensive. We are republishing these classic works in affordable, high quality, modern editions, using the original text and artwork.