[fwip]

Cooperation, not violence, is the reason for civilization.

[scandox]

I think possibly cooperation and violence. Or even cooperation for the purpose of enhanced violence.

[wsc981]

Perhaps a bit of both.

> So before I was nine I had learned the basic canon of Arab life. It was me against my brother; me and my brother against our father; my family against my cousins and the clan; the clan against the tribe; and the tribe against the world. And all of us against the infidel.

- “The Haj” by Leon Uris

Perhaps applies to other cultures as well. After all, the Western world is now struggling against Russia and tries to define “us versus them” through this struggle.

[alex_sf]

Cooperation is certainly critical, violence is what allows for it to take place.

You can build a utopian commune, but if your neighbors want your crops you would be wise to get a weapon.

[umeshunni]

Cooperation within the group and violence outside the group.

[dotgov]

What if both are?