Herr Professor, could you please translate that into Italian?

So the Herr Professor received my earnest thanks and departed.

Come, Herr Professor, we're not going to quarrel at this time of day.

"It is the thing the Herr Professor did not confide to me," he said bitterly.

But the Herr Professor kept some things secret, and that so-essential thing is one of them.

The Herr Professor was laughing and excited at the moment of departure.

The Herr Professor nodded to me through the glass window.

The Herr Professor saw me examining it, and he dis-mantled it.

"Was the Herr Professor alive or dead," we were asked.