Undine by Friedrich de la Motte Fouque, Fiction, Horror

"Most artistic of all the continental weird tales is the German classic Undine (1814), by Friedrich Heinrich Karl, Baron de la Motte Fouqué. In this story of a water-spirit who married a mortal and gained a human soul there is a delicate fineness of craftsmanship which makes it notable in any department of literature and an easy naturalness which places it close to the genuine folk-myth." -- H.P. Lovecraft, "Supernatural Horror In Literature"