Mahavira, the Jain patriarch, surpassed the morality of the Bible with a single sentence: Do not injure, abuse, oppress, enslave, insult, torment, torture, or kill any creature or living being. Imagine how different our world might be if the Bible contained this as its central precept.

If Jesus does come down out of the clouds like a superhero, Christianity will stand revealed as a science . That will be the science of Christianity.

While believing strongly, without evidence, is considered a mark of madness or stupidity in any other area of our lives, faith in God still holds immense prestige in our society. Religion is the one area of our discourse where it is considered noble to pretend to be certain about things no human being could possibly be certain about. It is telling that this aura of nobility extends only to those faiths that still have many subscribers. Anyone caught worshipping Poseidon, even at sea, will be thought insane.

It is safe to say that almost every person living in New Orleans at the moment Hurricane Katrina struck shared your belief in an omnipotent, omniscient, and compassionate God. But what was God doing while Katrina laid waste to their city? Surely He heard the prayers of those elderly men and women who fled the rising waters for the safety of their attics, only to be slowly drowned there.

Some propositions are so dangerous that it may even be ethical to kill people for believing them.

The only thing that permits human beings to collaborate with one another in a truly open-ended way is their willingness to have their beliefs modified by new facts. Only openness to evidence and argument will secure a common world for us.

I know of no society in human history that ever suffered because its people became too desirous of evidence in support of their core beliefs.