Read the whole thing: The God Debate.

One theme I've heard over and over all my life is the canard that atheists cannot be moral because morality requires faith or comes from a god.

WARREN:...If life is just random chance, then nothing really does matter and there is no morality-it's survival of the fittest. If survival of the fittest means me killing you to survive, so be it. For years, atheists have said there is no God, but they want to live like God exists. They want to live like their lives have meaning.

Then this:

WARREN: I believe that history split into A.D. and B.C. because of the Resurrection. And the Resurrection is not only the resurrection of Jesus Christ, it is the hope of the world: it says there's more to this life than just here and now. That doesn't mean that I do less, it means that this life is a test, it's a trust and it's a temporary assignment. If death is the end, shoot, I'm not going to waste another minute being altruistic.

Let's think about this for a minute. Warren is saying (like so many other religionites) that without God (and presumably an afterlife), there's no logical reason to behave nicely in this world. This is how he sees non-believers like me -- my kind do not behave morally.

For starters, let's look at the altruism of the two richest people in the United States: Warren Buffett and Bill Gates. Both are giving nearly all of their net worth to charities, and both are atheists. Neither will garner good will in the afterlife for doing good deeds, because they don't believe in an afterlife to begin with.

Next, is Warren's morality really all that moral? In his worldview, you behave nicely now because A) you will personally be rewarded in the afterlife for it, or B) you will be punished for not doing it. A bit self-serving, don't you think? A person who thinks like this is not truly altruistic; he's actually quite cynical. He weighs options of his actions in terms of avoiding the stick or chasing a carrot. All for an imaginary friend he believes in without evidence, but on faith. Like the faith of the True Believers that piloted jets into towers with similar stick/carrot beliefs.

I don't have the luxury of being forgiven later. I can't live a lifetime of evil, yet be saved in my final hour by accepting Jesus (or any of a thousand other One True Gods). I have to be decent, right here, and right now, not later. Because I do not have a 'later.'