«The Golden Key» is a fairy tale story by George MacDonald, written in 1868. The main character, a boy named Kate, finds a mysterious golden key that opens a door to a magical world. In this world, Kate encounters many marvelous creatures and experiences amazing adventures. In the work, the author touches on important philosophical themes such as the difference between good and evil, the search for truth and human purpose. Through magical events and encounters with unusual characters, Macdonald explores ideas about loyalty, bravery, kindness and justice. «The Golden Key» is not only a fascinating fairy tale, but also a deep moral story that teaches to appreciate inner strength, strive for light and goodness. The book will be interesting to both children and adults, thanks to its universal themes and rich symbolism.