The Shepherd's Boy and the Wolf
A certain Shepherd's Boy, who kept sheep upon a common, in sport and wantonness would often cry out, "The Wolf! the Wolf!" By this means, he several times drew the husbandmen in an adjoining field from their work; who, finding themselves deluded, resolved for the future to take no notice of his alarm. Soon after the Wolf came indeed. The boy cried out in earnest; but no heed being given to his cries, the sheep were devoured by the Wolf.
The notorious liar, besides the sin of the thing, will not be believed when, by chance, he tells the truth.