Life is short. Nevertheless, billions of people invest incalculable hours making fruitless pleas to nonexistent gods, participating in lavish rituals with no tangible effects, and whittling away tight budgets to support extravagant religious institutions or "spiritual advisors." Worse still, antiquated religious ideas lead people to impose needless hardships on themselves and others, to rationalize discrimination and other forms of mistreatment, and to hasten environmental destruction because they believe that "the end of the world" is imminent anyway. And for every outward manifestation of wasteful, counterproductive, and even downright harmful activity motivated only by religious belief, there are countless instances that are not nearly so obvious. Religious belief has exacted a toll on people's emotional well-being as well. Just how much energy has been drained searching for meaning where none is to be found, or been squandered on false hopes and unwarranted fears? How many believers have agonized over the uncertain destination of their loved ones after death? How many have struggled to discern exactly what they did to displease God after falling victim to a natural disaster? How many have been tormented trying to make sense of why God allows terrible things to happen to good people? In the absence of any clear revelation about what God wants us to do, how many have fretted about whether their own actions or beliefs, or those of the people dearest to them, are enough to avoid hellfire? How many of those who have lost their faith in old age have looked back at all the missed opportunities, the roads not taken, the life that could have been, had they not been born in a religious household, or had they abandoned religion in their younger days!

I don't use the word "atheist" about myself, because I think it mirrors the certitude I'm so opposed to in religion. What I say in the film is that I don't know. I don't know what happens when you die, and all the religious people who claim they do know are being ridiculous. I know that they don't know any more than I do. They do not have special powers that I don't possess. When they speak about the afterlife with such certainty and so many specifics, it just makes me laugh. People can tell you, "Oh yes, when you get to Paradise there are 72 virgins, not 70, not 75." Or they say, "Jesus will be there sitting at the right hand of the Father, wearing a white robe with red piping. There will be three angels playing trumpets." Well, how do you know this? It's just so preposterous. So, yes, I would like to say to the atheists and agnostics, the people who I call rationalists, let's stop ceding the moral high ground to the people who believe in the talking snake. Let's have our voices heard and be in the debate.

I'm not sure there is an afterlife. OK. If there is one, here's what I think it is. I think it's whatever you think you're going to get. Those suicide bombers, if they really believe that they are going to wind up in heaven with 71 virgins, yeah, that's probably what they're going to get in the afterlife. This is sort of predicated on the idea that there's a part of your mind programmed to create the way that dreams are created what you've been expecting to kind of ease you out of this life. Think of it this way. I think of the brain as this great, big, crenelated library with many rooms, billions and billions of books, rooms without number, but at the very end of all those rooms, there's a little tiny box that says "pull lever in case of emergency," because that's the door out, and when you go out, you get pretty much what you expected, because some chemical in your brain is programmed to give you that particular dream at the very end. If you're expecting [H.P. Lovecraft's] Yogg Sothoth, there he'll be, along with the 900 blind fiddlers, or whatever it is.

This is the idea that people have in their heads, that somehow you can have a person who sounds very rational and can hold his own in a conversation about whether religion is silly or not. And I just disagree with that premise. If you're defending the story I just described, you are going to come out sounding ridiculous no matter who you are and no matter how intelligent you are. We interviewed Francis Collins in the film. He's the man who mapped the human genome, he's a brilliant scientist. But he says some pretty cuckoo things, some things that are just factually wrong and make him look foolish. I said, "We don't even know for sure whether Jesus lived," and he said, "We have eyewitness accounts." I said, "No, every scholar agrees that the gospels were written from 40 to 70 years after Jesus died." And he said, "Well, that's close." That's close to an eyewitness account? Forty years after somebody dies, 2,000 years ago? This idea that there's somebody out there who can make a case for this and make it sound reasonable, that just doesn't exist.

And here is the point, about myself and my co-thinkers. Our belief is not a belief. Our principles are not a faith. We do not rely solely upon science and reason, because these are necessary rather than sufficient factors, but we distrust anything that contradicts science or outrages reason. We may differ on many things, but what we respect is free inquiry, openmindedness, and the pursut of ideas for their own sake. We do not hold our convictions dogmatically: the disagreement between Professor Stephen Jay Gould and Professor Richard Dawkins, concerning "punctuated evolution" and the unfilled gaps in post-Darwinian theory, is quite wide as well as quite deep, but we shall resolve it by evidence and reasoning and not by mutual excommunication.

Thus the mildest criticism of religion is also the most radical and the most devastating one. Religion is man-made. Even the men who made it cannot agree on what their prophets or redeemers or gurus actually said or did. Still less cn they hope to tell us the "meaning" of later discoveries and developments which were, when they began, either obstructed by their religion or denounced by them. And yet — the believers still claim to know! Not just to know, but to know everything. Not just to know that god exists, and that he created and supervised the whole enterprise, but also to know what "he" demands of us — from our diet to our observances to our sexual morality. In other words, in a vast and complicated discussion where we know more and more about less and less, yet can still hope for some enlightenment as we proceed, one faction — itself composed of warring factions — has the sheer arrogance to tell us that we already have all the essential information we need. Such stupidity, combined with such pride, should be enough on its own to exclude "belief" from the debate. The person who is certain, and who claims divine warrant for his certainty, belongs now to the infancy of our species. It may be a long farewell, but it has begun and, like all farewells, should not be protracted.

But in the present state of psychology and physiology, belief in immortality can, at any rate, claim no support from science, and such arguments as are possible on the subject point to the probable extinction of personality at death. We may regret the thought that we shall not survive, but is a comfort to think that all the persecutors and Jew-baiters and humbugs will not continue to exist for all eternity. We may be told that they would improve in time, but I doubt it.

Although social surveys indicate that roughly 80 percent of Americans believe in life after death, it is a belief cherished against the grain of perceived official skepticism; and among academically trained religious thinkers, one finds a greater measure of skepticism than in the population at large. For many, immortality is not a matter for reasoned debate, but is simply ruled out of play, along with guardian angels and statues that weep. It is taken for granted, as if it were a premise accepted by all reasonable people, that no one seriously believes in Heaven, Hell, or Purgatory, in the life of the soul, the resurrection of the body, or the personality of God as the concrete realities they were once imagined to be.

It's a familiar story now. Young Christian was born into a God-fearing household. He learned to read from an illustrated children's Bible (one of those with the sex and nastiness carefully bowdlerised). He went to a Christian school. He joined a Christian group in college. He got into an argument with an atheist and found his knowledge of the Bible wanting. He set out to study the Bible in greater depth, so he could answer the atheist's objections all the better. He found the Bible hopelessly flawed and suffered a crisis of faith. He went to his church so his faith might be restored, but found no convincing answers for his questions. He left the church, convinced that there was something wrong with him, which made him unable to believe and left him eternally damned. He discovered that there was life after religion, and that it wasn't all bad, and that there are more things in heaven and earth than his priest ever told him about. Now he calls himself an atheist.

Still, I must insist that the most important question about heaven and hell — who goes where, whether there are second chances, what form the judgments and rewards take, intermediate states after death — are opaque at best. Increasingly, I am grateful for that ignorance and grateful that the God who revealed himself in Jesus is the one who knows the answers.