"Every man, who parrots the cry of 'stand by the President' without adding the proviso 'so far as he serves the Republic' takes an attitude as essentially unmanly as that of any Stuart royalist who championed the doctrine that the King could do no wrong. No self-respecting and intelligent free man could take such an attitude."
President Theodore Roosevelt
"The ideal subject of totalitarian rule is not the convinced Nazi or the dedicated communist, but people for whom the distinction between fact and fiction, true and false, no longer exists." —Hannah Arendt, Origins of Totalitarianism
As well as a history lesson on propaganda:
There was no point in seeking to convert the intellectuals. For intellectuals would never be converted and would anyway always yield to the stronger, and this will always be "the man in the street." Arguments must therefore be crude, clear and forcible, and appeal to emotions and instincts, not the intellect.
Joseph Goebbels