Stories from Hans Andersen by H. C. Andersen

Now we are about to begin, and you must attend; and when we get to the end of the story, you will know more than you do now about a very wicked hobgoblin. He was one of the worst kind; in fact he was a real demon. One day he was in a high state of delight because he had invented a mirror with this peculiarity, that every good and pretty thing reflected in it shrank away to almost nothing. On the other hand, every bad and good-for-nothing thing stood out and looked its worst. The most beautiful landscapes reflected in it looked like boiled spinach, and the best people became hideous, or else they were upside down and had no bodies.