“Yes, but the machine I am talking about would always point north, even if we had changed our route, and at every point it would tell us which way to turn.” “It would be marvelous. But we would have to have this machine, and it would have to be able to recognize north at night and indoors, without being able to see the sun or the stars…. And I believe not even your Bacon possessed such a machine.” I laughed.
