The illusion of design is so successful that to this day most Americans (including, significantly, many influential and rich Americans) stubbornly refuse to believe it is an illusion.

To illustrate the vain conceit that the universe must be somehow pre-ordained for us, because we are so well-suited to live in it, he [Douglas Adams] mimed a wonderfully funny imitation of a puddle of water, fitting itself snugly into a depression in the ground, the depression uncannily being exactly the same shape as the puddle.

Each step is not too improbable for us to countenance, but when you add them up cumulatively over millions of years, you get these monsters of improbability, like the human brain and the rain forest. It should warn us against ever again assuming that because something is complicated, God must have done it.

No educated person believes the Adam and Eve myth nowadays, but it's surprising how many parents think that it's somehow fun to pass on this falsehood to their children...I would want to argue that the truth of evolution is more interesting and more poetic

Some sort of belief in all-powerful supernatural beings is common, if not universal. A tendency to obey authority, perhaps especially in children, a tendency to believe what you're told, a tendency to fear your own death, a tendency to wish to see your loved ones who have died, to wish to see them again, a wish to understand where you came from, where the world came from, all these psychological predispositions, under the right cultural conditions, tend to lead to people believing in things for which there is no evidence.

To fill a world with ... religions of the Abrahamic kind, is like littering the streets with loaded guns. Do not be surprised if they are used.

I like to think 'The God Delusion' is a humorous book. I think, actually, it's full of laughs. And people who describe it as a polarizing book or as an aggressive book, it's just that very often they haven't read it.