Bush and bin Laden are really on the same side: the side of faith and violence against the side of reason and discussion. Both have implacable faith that they are right and the other is evil.

I don't understand why so many people who are sophisticated in science go on believing in God. I wish I did.

There is an anaesthetic of familiarity, a sedative of ordinariness which dulls the senses and hides the wonder of existence. For those of us not gifted in poetry, it is at least worth while from time to time making an effort to shake off the anaesthetic. What is the best way of countering the sluggish habitutation brought about by our gradual crawl from babyhood? We can't actually fly to another planet. But we can recapture that sense of having just tumbled out to life on a new world by looking at our own world in unfamiliar ways.

I do believe that nice religious people make the world safe for extremists by teaching us [...] that faith is a virtue, teaching us that there's something good about holding beliefs without any substantiating evidence. Once you buy into that, [...] then the door is opened to extremists who defend their extremism by saying, 'Oh well, it's my faith, you can't touch it, you can't criticise my faith, I don't even need to defend it because faith is faith.'

Far from being demeaning to human spiritual values, scientific rationalism is the crowning glory of the human spirit. Of course you can use the products of science to do bad things, but you can use them to do good things too.

What is the purpose of the universe?" is a silly question.

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.