... in the nature of man, we find three principal causes of quarrel. First, competition; secondly, diffidence , thirdly, glory. The first, maketh men invade for gain; the second, for safety; and the third, for reputation.
... Force & fraud, are in war the two cardinal virtues.
... the passions that incline men to peace, are "fear of death".
-Hobbes, the Leviathan