“And yet on that bench at Jacobacci, I was glad I had left everyone else behind. Although this was a town with a main street and a railway station, and people with dogs and electric lights it was near enough to the end of the earth to give me the impression that I was a solitary explorer in a strange land. That illusion (which was an illusion in the South Pole and at the headwaters of the Nile) was enough of a satisfaction to me to make me want to go forward.”