In Hindu medicine, fairy tales are used metaphorically to effect changes in persons suffering from mental afflictions. It is hoped that by contemplating the tale, the sufferer may find a path through and beyond the emotional disturbance. Hindu physicians understand that a story can work upon the psyche in mysterious and incomprehensible ways. The tale functions as a koan, a guide, a model, and a teacher to the listener.
— Richard Stone, The Healing Art of Storytelling