" Do you think,” said Candide, “that mankind always massacred one another as they do now? Were they always guilty of lies, fraud, treachery, ingratitude, inconstancy, envy, ambition, and cruelty? Were they always thieves, fools, cowards, gluttons, drunkards, misers, calumniators, debauchees, fanatics, and hypocrites?”

“Do you believe,” said Martin, “that hawks have always been accustomed to eat pigeons when they came in their way?”
“Doubtless,” said Candide. “Well then,” replied Martin, “if hawks have always had the same nature, why should you pretend that mankind change theirs? "

― Voltaire , Candide