Slogans attributed to Goebbels:
Goebbels used to say that "Domination of the street [media] is the first step to state power." "Propaganda means repetition and more repetition!"
"Repeat it until even the densest has got it."
"Denials must always be categoric."
"Denials alone won't work. You've got to counterattack."
"If you repeat a lie often enough, it becomes the truth."
"It would not be impossible to prove with sufficient repetition and a psychological understanding of the people concerned that a square is in fact a circle. They are mere words, and words can be molded until they clothe ideas and disguise."
"The bigger the lie, the more people will believe it."
"The most brilliant propagandist technique will yield no success unless one fundamental principle is borne in mind constantly -- it must confine itself to a few points and repeat them over and over."
"If you tell a lie big enough and keep repeating it, people will eventually come to believe it. The lie can be maintained only for such time as the State can shield the people from the political, economic and/or military consequences of the lie. It thus becomes vitally important for the State to use all of its powers to repress dissent, for the truth is the mortal enemy of the lie, and thus by extension, the truth is the greatest enemy of the State."
-- Joseph Goebbels, German Minister of Propaganda, 1933-1945