I wondered, and wonder still, what thoughts were passing through that old brain to keep him at his work, quietly, steadily, on the edge of hell. For there, quite close and clear, was hell, of man’s making, produced by chemists and scientists, after centuries in search of knowledge. There were the fires of hate, produced out of the passion of humanity after a thousand years of Christendom and of progress in the arts of beauty. There was the devil-worship of our poor, damned human race, where the most civilized nations of the world were on each side of the bonfires. It was worth watching by a human ant.