„History teaches that wars begin when governments believe the price of aggression is cheap.“

— Ronald Reagan

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„History teaches, perhaps, very few clear lessons. But surely one such lesson learned by the world at great cost is that aggression, unopposed, becomes a contagious disease.“
— Jimmy Carter
„Let me recite what history teaches. History teaches.“
— Gertrude Stein
„History teaches, but it has no pupils.“
— Antonio Gramsci