“Doctor Faustus” is a book that was published in 1943 and is considered one of the most important works of the 20th century. It is a novel based on an old German legend about Doctor Johann Faustus, who sold his soul to the devil. In the book, Thomas Mann tells the story of a young composer, Leverkühn, who made a deal with the Darkness: everyone he loved would die, and his genius would bring only misfortune to people.