The difference between science and religion is the difference between a willingness to dispassionately consider new evidence and new arguments , and a passionate unwillingness to do so.

It is merely an accident of history that it is considered normal in our society to believe that the Creator of the universe can hear your thoughts while it is demonstrative of mental illness to believe that he is communicating with you by having the rain tap in Morse code on your bedroom window.

We have Christians against Muslims against Jews. They're making incompatible claims on real estate in the Middle East as though God were some kind of omniscient real estate broker parsing out parcels of land to his chosen flock. People are literally dying over ancient literature.

The only thing that guarantees an open-ended collaboration among human beings, the only thing that guarantees that this project is truly open-ended, is a willingness to have our beliefs and behaviors modified by the power of conversation.

All I'm arguing for really is that we should have a conversation where the best ideas really thrive, where there's no taboo against criticizing bad ideas, and where everyone who shows up, in order to get their ideas entertained, has to meet some obvious burdens of intellectual rigor and self-criticism and honesty-and when people fail to do that, we are free to stop listening to them. What religion has had up until this moment is a different set of rules that apply only to it, which is you have to respect my religious certainty even though I'm telling you I arrived at it irrationally.

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.

The idea, therefore, that religious faith is somehow a sacred human convention—distinguished, as it is, both by the extravagance of its claims and by the paucity of its evidence—is really too great a monstrosity to be appreciated in all its glory. Religious faith represents so uncompromising a misuse of the power of our minds that it forms a kind of perverse, cultural singularity—a vanishing point beyond which rational discourse proves impossible.