The great masses of people will more easily fall victims to a big lie than to a small one. Especially if it is repeated again and again.

This misquote could possibly have two possible sources: an abridged version of a paragraph in Mein Kampf regarding the Big Lie, or a report by the United States Office of Strategic Services about Hitler's psychological profile. The second version is very close to an actual quote by Joseph Goebbels.

The bigger/more blatant a lie, the more people will believe it.