A literary fairy tale is a fairy tale that differs from an oral folktale in that it is written by "a single identifiable author", as defined by Jens Tismar's monograph. They also differ from oral folktakes, which can be characterized as "simple and anonymous", and exist in a mutable and difficult to define genre with a close relationship to oral tradition. One of the earliest stories of this type is that of Cupid and Psyche, a story originally from Metamorphoses (also called The Golden Ass), written in the 2nd century AD by Apuleius. Source: Wikipedia (en)