A kernel of truth lurks at the heart of religion, because spiritual experience, ethical behavior, and strong communities are essential for human happiness. And yet our religious traditions are intellectually defunct and politically ruinous. While spiritual experience is clearly a natural propensity of the human mind, we need not believe anything on insufficient evidence to actualize it.

The problem is not that religious people are stupid. It's not that religious fundamentalists are stupid. I happen to think that you can be so well educated that you can build a nuclear bomb, and still get--and still believe that you will get the 72 virgins in paradise--that is the problem. The problem is that--religion--because it has been sheltered from criticism as it has been--allows people--perfectly sane, perfectly intelligent people--to believe en masse, what only idiots or lunatics could believe in isolation.

The problem I want to talk to you about tonight is the problem of belief. What does it mean to believe? We use this word all the time, and I think behind it lurk some really extraordinary taboos and confusions. What I want to argue tonight is that how we talk about belief- how we fail to criticize or criticize the beliefs of others, has more importance to us personally, more consequence to us personally and to civilization than perhaps anything else that is in our power to influence.

Man is manifestly not the measure of all things. This universe is shot through with mystery. The very fact of its being, and of our own, is a mystery absolute, and the only miracle worthy of the name.

The core of science is not a mathematical modeling--it is intellectual honesty. It is a willingness to have our certainties about the world constrained by good evidence and good argument.

You can do what you decide to do — but you cannot decide what you will decide to do.

Despite a full century of scientific insights attesting to the antiquity of the earth, more than half of our neighbors believe that the entire cosmos was created six thousand years ago. This is, incidentally, about a thousand years after the Sumerians invented glue.