The Sorrows of Young Werther/Die Leiden des jungen Werther. Johann Wolfgang von Goethe

Loosely based on Goethe's personal experiences, the novel is written mostly in the form of letters in which Werther recounts his unrequited love for a married woman. Its Sturm und Drang style, portraying the rebellion of youthful genius against conventional standards, makes it a perennial favorite with readers of every era.