Book excerpt: A goblin lived with a grocer whom he liked a lot because, at Christmas, the grocer never forgot to give him his porridge with a big knob of butter. Under the eaves of the grocer’s house lived a student that the goblin had disliked at first sight. But, one day, when the goblin wanted to play a prank on the student, he discovered something that would transform his peaceful existence. Hans Christian Andersen (1805-1875) was a Danish author, poet and artist. Celebrated for children’s literature, his most cherished fairy tales include "The Emperor's New Clothes", "The Little Mermaid", "The Nightingale", "The Steadfast Tin Soldier", "The Snow Queen", "The Ugly Duckling" and "The Little Match Girl". His books have been translated into every living language, and today there is no child or adult that has not met Andersen's whimsical characters. His fairy tales have been adapted to stage and screen countless times, most notably by Disney with the animated films "The Little Mermaid" in 1989 and "Frozen", which is loosely based on "The Snow Queen", in 2013. Thanks to Andersen's contribution to children's literature, his birth date, April 2, is celebrated as International Children's Book Day.