Thus, effective propaganda must be limited to a very few points and must harp on these in slogans until the last member of the public understands what you want him to understand. The masses move slowly. They always require a long time before they notice anything. It is only after the simplest ideas are repeated thousands of times will the masses finally remember them. Propaganda must confine itself to a few points and repeat them over and over.
Persistence is the most important requirement for success.
Different presentations must not alter what the propaganda is driving at, but must always say the same thing. For instance, an idea is presented from different angles, but the slogan itself is always repeated. The art of propaganda consists in doing it so skillfully that the masses are convinced in their hearts and minds that the fact is real, the process necessary, the goal correct.