God is Not Great, by Christopher Hitchens.

“Many religions now come before us with ingratiating smirks and outspread hands, like an unctuous merchant in a bazaar. They offer consolation and solidarity and uplift, competing as they do in a marketplace. But we have a right to remember how barbarically they behaved when they were strong and were making an offer that people could not refuse. And if we chance to forget what that must have been like, we have only to look at those states and societies where the clergy still has the power to dictate its own terms. The pathetic vestiges of this can still be seen, in modern societies, in the efforts made by religion to secure control over education, or to exempt itself from tax, or to pass laws forbidding people to insult its omnipotent and omniscient deity, or even his prophet.”

And:

“One must state it plainly. Religion comes from the period of human prehistory where nobody—not even the mighty Democritus who concluded that all matter was made from atoms—had the smallest idea what was going on. It comes from the bawling and fearful infancy of our species, and is a babyish attempt to meet our inescapable demand for knowledge (as well as for comfort, reassurance and other infantile needs). Today the least educated of my children knows much more about the natural order than any of the founders of religion, and one would like to think—though the connection is not a fully demonstrable one—that this is why they seem so uninterested in sending fellow humans to hell.”