" Because it worked really well for some people," I said. "Let's not lie, Hart. It worked really well for us. For humans. And more specifically for the Colonial Union. A system of government, stable for centuries, predicated on killing the shit out of everyone else and taking their land. That's practically the modus operandi of every successful human civilization to date. No wonder some of us wanted to return to it, even at the risk of destroying the Colonial Union itself. Because if we got back, we'd be meaner than ever before. "

― John Scalzi , The End of All Things (Old Man's War, #6)