Walter Charles Langer (February 5, 1899 – July 4, 1981) was a Cambridge, Massachusetts psychoanalyst best known for his role in preparing a World War II psychological analysis of Adolf Hitler in 1943 for the Office of Strategic Services (OSS).
Langer used the below quote in writing a profile of Hitler for the U.S. Office of Strategic Services (the OSS was the precursor to the CIA). Langer was describing Adolf Hitler's approach to government in the quote below. (Hitler put forward the theory of "The Big Lie" in his book, Mein Kampf.)
"His (Hitler's) primary rules were: never allow the public to cool off; never admit a fault or wrong; never concede that there may be some good in your enemy; never leave room for alternatives; never accept blame; concentrate on one enemy at a time and blame him for everything that goes wrong; people will believe a big lie sooner than a little one; and if you repeat it frequently enough people will sooner or later believe it."