Dr. Dawkins has posted a great entry over at richarddawkins.net. It is from Nobel prize winner Steven Weinberg, and is one of my favorites as well, so I thought I would post it here.
"With or without [religion] you'd have good people doing good things and evil people doing evil things. But for good people to do evil things, it takes religion."
I am proudly an Atheist and a Humanist/Naturalist. I will do good because it make sense to cause as little suffering as possible, not because some imaginary papa smurf in the sky commands it.