If you are serious about this issue here is a 2 hour long video from sam harris and richard dawkins on this issue.
http://www.youtube.com/watch?v=Mm2Jrr0tRXk
It covers the issue very lightly compared to his book the moral landscape. I would try to make some of his points here but he makes them way better.
http://www.amazon.com/Moral-Landscape-Sc...465&sr=8-1
http://www.youtube.com/watch?v=Mm2Jrr0tRXk
It covers the issue very lightly compared to his book the moral landscape. I would try to make some of his points here but he makes them way better.
http://www.amazon.com/Moral-Landscape-Sc...465&sr=8-1