Here is small sample of CNN's Interview:
CNN's Kelly Murray: Tell us about the title of your book.
Frans de Waal: Well, the reason I chose that title is, when I bring up the origins of morality, it revolves around God, or comes from religion, and I want to address the issue that I think morality is actually older than religion. So I'm getting into the religion question, and how important is religion for morality. I think it plays a role, but it's a secondary role. Instead of being the source of morality, religion came later, maybe to fortify morality.
See how Dr. Craig responds here.