There were once upon a time two sausage machines, exquisitely constructed for the purpose of turning pig into the most delicious sausages. One of these retained his zest for pig and produced sausages innumerable; the other said: 'What is pig to me? My own works are far more interesting and wonderful than any pig.' He refused pig and set to work to study his inside. When bereft of its natural food, his inside ceased to function, and the more he studied it, the more empty and foolish it seemed to him to be. All the exquisite apparatus by which the delicious transformation had hitherto been made stood still, and he was at a loss to guess what it was capable of doing.
Source: The Conquest of Happiness, 1930, chap. 11: Zest
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