from The Globe & Mail, March 29th.
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 often enough, people will 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.
and, from Josef Goebbels, 9 Jan 1928 (Wikiquotes):
"Propaganda should be popular, not intellectually pleasing. It is not the task of propaganda to discover intellectual truths."