In George Orwell's "Animal Farm" the mighty cart-horse, Boxer, inspires the other animals with his heroic cry of "I will work harder". He gets up at the crack of dawn to do a couple of hours' extra ploughing. He even refuses to take a day off when he splits his hoof. And his reward for all this effort? As soon as he collapses on the job he is carted off to the knacker's yard to be turned into glue and bonemeal.
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