Dr. Paul Joseph Goebbels: There will be slight change in our methods. From now on, National Socialism in the United States must wrap itself in the American flag. It must appear to be a defense of Americanism. But at the same time, our aim must always be to discredit conditions there in the United Sates. And in this way make life in Germany admired and wished for. Racial and religious hatred must be fostered on the basis of American-Aryanism. Classism must be encouraged in a way that the labor and the middle classes will become confused and antagonistic. In the ensuing chaos, we will be able to take control.

Edward 'Ed' Renard: [to Schneider] Don't worry. There's no third-degree with the Federal bureau of Investigation.

Edward 'Ed' Renard: Funny thing working on a case like this for so long. Something like spending a great deal of time going through a madhouse. You see these Nazis operating here, and you think of all those in Germany, you can't help feeling somehow that they're, well, absolutely insane.

Edward 'Ed' Renard: I told you I thought this man is an amateur. If he is, why did he become a spy? Well, because he's been listening to speeches, and reading pamphlets about Nazi Germany and believing them. Unfortunately, there are thousands like him in America. Half-witted, hysterical crackpots who go "Hitler-happy" from overindulgence in propaganda that makes them believe that they're supermen.

[last lines]
[Kellogg and Renard hear remarks about the spy case by diners at a lunch counter]
U.S. Atty. Kellogg: The voice of the people.
Edward 'Ed' Renard: Thank God for such people.
U.S. Atty. Kellogg: Yes, thank God.