" Edward Tylor noted in 1874 that the religions of “savage” societies were “almost devoid of that ethical element which to the educated modern mind is the very mainstream of practical religion.” Tylor wasn’t saying that savages lack morality. He stressed that the moral standards of savages are generally “well-defined and praiseworthy.” It’s just that “these ethical laws stand on their own ground of tradition and public opinion,” rather than on a religious foundation. "
― Robert Wright , The Evolution of God