“Give me your word of honour, Herr Professor!”

“Wumpf, how dare you?”

“Your word of honour, Herr Professor!”

“Vewy good, you have it!”

“Jupiter Ultor is witness.”

“What?”

“I call upon the gods for witnesses.”

“Open the door, I thay!”

“Presently, Herr Professor. You are sure you bear me no grudge?”

“No, no, no! Will you open that door?”