"His very existence was improbable, inexplicable, and altogether bewildering. He was an insoluble problem. It was inconceivable how he had existed, how he had succeeded in getting so far, how he had managed to remain — why he did not instantly disappear. ‘I went a little farther,’ he said, ‘then a little farther — till I had gone so far that I don’t know how I’ll ever get back.’"
— Joseph Conrad, Heart of Darkness