Supernatural monitoring, not moral emotions alone, scaled prosociality to mass societies

Evidence

To be clear, just as religion is not the only source of prosociality, supernatural monitoring is not the only source of prosociality in religion. … But they are also found in secular societies and nonreligious examplars as well (such as in secular humanism). … It was these forces of supernatural monitoring and related processes that pushed human groups to rapidly scale up, from hunter-gatherer origins to the vast societies of millions today. — Norenzayan, Ara, Big gods - how religion transformed…, 255