These tales concern the doing of things recognized as impossible to do; impossible to believe; and, as the weary reader may well cry aloud, impossible to read about. Did the narrator merely say that they happened, without saying how they happened, they could easily be classified with the cow who jumped over the moon or the more introspective individual who jumped down his own throat. In short, they are all tall stories; and though tall stories may also be true stories, there is something in the very phrase appropriate to such a topsy-turvydom; for the logician will presumably class a tall story with a corpulent epigram or a long-legged essay. (From the book)