O shame to men! Devil with devil damned Firm concord holds, men only disagree Of creatures rational, though under hope Of heavenly grace: and God proclaiming peace, Yet live in hatred, enmity, and strife Among themselves, and levy cruel wars, Wasting the earth, each other to destroy: As if (which might induce us to accord) Man had not hellish foes enough besides, That day and night for his destruction wait.
John Milton