Two people drift in a lifeboat on an uncharted sea. 
One says, "There! I see an island. Our best chance 
is to go ashore, build a shelter, and await rescue." 
The other says, "No, we must go farther out to sea 
and hope to find the shipping lanes. That is our best 
chance." Unable to agree, the two fight, the lifeboat 
capsizes, and they drown. This is the nature of humanity. 
Even if only two people are left in the entire universe, 
they will come to represent opposing factions.

                    -- The Bene Gesserit Acolyte's Manual