- Dr. Robert Koch: [to his wife Emmy] Why do you think I am sitting here nights after nights at the microscope? Because I finally want to know what it is, tuberculosis.
- Geheimrat Rudolf Virchow: [wants to open his front door to leave his office but remembers that Robert Koch is waiting behind this doors, he leaves the door closed and walks away talking to his colleagues] Now I am forced to use backdoors.
- Kaiser Wilhelm I.: To err is human.
- Geheimrat Rudolf Virchow: In my occupation, your majesty, to err, unfortunately, is death.
- Dr. Robert Koch: Göhrte! What are you doing?
- Sprecher der Gesundbeter: We have come to excorsice the devil.
- Dr. Robert Koch: The only devil that needs to be excorsiced is your brainburned stupidity.
- Sprecher der Gesundbeter: You are sinning with the chosen one of the Lord.
- Dr. Robert Koch: The chosen one of the Lord? You are a cancer damage. That should be burned.