E. R. Punshon, The Diamond (1917)
“ He turned and strode out of the place, and Watson looked after him smilingly. "Crazed, poor brute!" he said to himself. And later on he said to him: "If you like to give up your Kimberley notion, you can stay around here. You can build a hut for yourself, and I dare say I can always make you useful enough to pay your keep." "You—you make me useful!" cried Robson, flaming into sudden anger. "You dare suggest my staying on in this hole, that isn't fit for a mangy dog or a blind jackal! You make me useful, you pay my keep! ”
