In reality, there are six billion different beliefs on earth, since every individual interprets life in their own way. Groups are formed due to similarity of ideas, not because of identical doctrine. Gathering into clans is more an aspect of human behavior, and primate behavior in general, than it has to do with spirituality. The resulting smaller sects are likely to shift back toward a defensive posture. To summarize, we must look at certain basic points.
Humans are animals, and follow established, universal, natural laws.
The balance in the animal kingdom is maintained through having primary predators control their own numbers. Quotes from ancient literary works do not carry a copyright.