The victim of mind-manipulation does not know that he is a victim. To him, the walls of his prison are invisible, and he believes himself to be free.
Aldous HuxleyGreat is truth, but still greater, from a practical point of view, is silence about truth. By simply not mentioning certain subjects... totalitarian propagandists have influenced opinion much more effectively than they could have by the most eloquent denunciations.
Aldous Huxley