If you repeat a lie often enough, people will believe it, and you will even come to believe it yourself.

Attributed to Goebbels in Publications Relating to Various Aspects of Communism (1946), by United States Congress, House Committee on Un-American Activities. No reliable source has been located, and this is probably simply a further variation of the Big Lie idea. | If you repeat a lie often enough, people will believe it. | If you repeat a lie often enough, it becomes the truth. | If you tell a lie big enough and keep repeating it, people will eventually come to believe it. | If you repeat a lie long enough, it becomes truth. | If you repeat a lie many times, people are bound to start believing it. | Attributed in The Sack of Rome (2006) by Alexander Stille, p. 14, and also attributed in A World Without Walls: Freedom, Development, Free Trade and Global Governance (2003) by Mike Moore, p. 63.