This may be a bit off topic but we have been reading The Bonobo and the Atheist: In Search of Humanism Among the Primates by Frans de Waal, at our house. A fascinating study of the origins of morality within the pre-human primates. Morality pre-dates religion, apparently. So those of us who find it quite possible to be moral without being religious are merely following through on the traditions of our primate heritage.

From whence, then, comes the add-ons of man made, hierarchical - mostly - religions. Maybe that is another book, or a few zillion books! Some of which might be interesting, or amusing.