In fact, "atheism" is a term that should not even exist. No one ever needs to identify himself as a "non-astrologer" or a "non-alchemist." We do not have words for people who doubt that Elvis is still alive or that aliens have traversed the galaxy only to molest ranchers and their cattle. Atheism is nothing more than the noises reasonable people make in the presence of unjustified religious beliefs.

It is terrible that we all die and lose everything we love; it is doubly terrible that so many human beings suffer needlessly while alive. That so much of this suffering can be directly attributed to religion—to religious hatreds, religious wars, religious delusions and religious diversions of scarce resources—is what makes atheism a moral and intellectual necessity.

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.

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.

When the stakes are this high- when calling God by the right name can make the difference between eternal happiness and eternal suffering, it is impossible to respect the beliefs of others who don't believe as you do.

If history reveals any categorical truth, it is that an insufficient taste for evidence regularly brings out the worst in us. Add weapons of mass destruction to this diabolical clockwork, and you have . . . a recipe for the fall of civilization.

Unreason is now ascendant in the United States—in our schools, in our courts, and in each branch of the federal government.