Reviewed in today's New York Times,
The Faith Instinct: How Religion Evolved and Why It Endures.
The review is titled
The God Gene. Short excerpt:
NYT book review writes:
Long ago, codes requiring altruistic behavior, and the gods who enforced them, helped human society expand from families to bands of people who were not necessarily related. We didn’t become religious creatures because we became social; we became social creatures because we became religious. Or, to put it in Darwinian terms, being willing to live and die for their coreligionists gave our ancestors an advantage in the struggle for resources.
--Percy
Edited by Percy, : Italicize the title.