Wondering where this passage originated? Many would likely contribute it to a contemporary source. But this text comes from an post-WW2 analysis of Adolf Hitler's strategies and use of the "Big Lie" to manipulate and control the masses, as prepared by the United States Office of Strategic Services. (i.e., see here).
A "big lie" (German: große Lüge) is a propaganda technique. The expression was coined by Adolf Hitler, when he dictated his 1925 book Mein Kampf, about the use of a lie so "colossal" that no one would believe that someone "could have the impudence to distort the truth so infamously." Hitler falsely claimed the technique was used by Jews to blame Germany's loss in World War I on German Army officer Erich Ludendorff, similar to the way the blood libel, the claim that Jews sacrificed babies, was used as justification to persecute Jews throughout the middle ages.
Of course, the origin of the "big lie" is much more ancient. It was originally perpetrated with devastating effect by the author of evil millennia ago in Eden. Mankind continuously fails to heed the warning of Ecclesiastes 1:9: "What has been will be again, what has been done will be done again; there is nothing new under the sun."