This is a quote from the book "Animal Farm" by George Orwell
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But it was a slow, laborious process. Frequently it took a whole day of exhausting effort to drag a single boulder to the top of the quarry, and sometimes when it was pushed over the edge it failed to break. Nothing could have been achieved without Boxer, whose strength seemed equal to that of all the rest of the animals put together. When the boulder began to slip and the animals cried out in despair at finding themselves dragged down the hill, it was always Boxer who strained himself against the rope and brought the boulder to a stop. To see him toiling up the slope inch by inch, his brea...

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