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“The receptivity of the masses is very limited, their intelligence is small, but their power of forgetting is enormous. In consequence of these facts, all effective propaganda must be limited to a very few points and must harp on these in slogans until the last member of the public understands what you want him to understand by your slogan.”
― Adolf Hitler

“And if all others accepted the lie which the Party imposed—if all records told the same tale—then the lie passed into history and became truth. 'Who controls the past' ran the Party slogan, 'controls the future: who controls the present controls the past.”
― George Orwell, 1984

“The most effective way to destroy people is to deny and obliterate their own understanding of their history.”
― George Orwell

“All the war-propaganda, all the screaming and lies and hatred, comes invariably from people who are not fighting.”
― George Orwell, Homage to Catalonia