As we saw in chapter 9, it is only when groups get large enough that people regularly interact with strangers that cultures invent moralizing gods. These are not gods who sit around the banquet table laughing with detachment at the foibles of humans down below, or gods who punish humans for lousy sacrificial offerings. These are gods who punish humans for being rotten to other humans-in other words, the large religions invent gods who do third-party punishment. No wonder this predicts these religions' adherents being third-party punishers themselves.
( Robert M. Sapolsky )
[ Behave: The Biology of Humans ]
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