the 18th-century English novelist Jane Austen: "I have seen nobody on the stage who has been a more interesting Character than that compound of Cruelty and Lust". The Danish philosopher Søren Kierkegaard discussed Mozart's version of the Don Juan story at length in his 1843 treatise Either/Or. In 1901, Finnish composer Jean Sibelius wrote the second movement of his second symphony based on the climax of Don Juan. The piece begins with a representation of Death walking up the road to Don Juan's house, where Don Juan pleads with Death to let him live. Also, the 1905 novel The Song of the Blood-Red Flower by the Finnish author Johannes Linnankoski has been influenced by Don Juan along the protagonist of the story. The protagonist of Shaw's 1903 Man and Superman is a modern-day Don Juan named not Juan Tenorio but John Tanner. The actor playing Tanner morphs into his model in the mammoth third act, usually called Don Juan in Hell and often produced as a separate play due to its length. In it, Don Juan (played by Charles Boyer in a noted 1950s recording) exchanges philosophical barbs with the devil (Charles Laughton). In 1911, Ukrainian writer Lesya Ukrainka wrote poetic drama The Stone Host about Don Juan. As the author herself determined, it's about the victory of the conservative principle over the split soul of Donna Anna, and through her – over Don Juan. The traditional seducer of women became a victim of the woman who had broken his will. In Spain, the first three decades of the twentieth century saw more cultural fervor surrounding the Don Juan figure than perhaps any other period. In one of the most provocative pieces to be published, the endocrinologist Gregorio Marañón argued that, far from the paragon of masculinity he was often assumed to be, Don Juan actually suffered from an arrested psychosexual development. During the 1918 influenza epidemic in Spain, the figure of Don Juan served as a metaphor for the flu microbe. The mid-20th century French author Albert Camus referred to Don Juan in his 1942 essay The Myth of Sisyphus. Camus describes Don Juan as an example of an "absurd hero", as he maintains a reckless abandon in his approach to love. His seductive lifestyle "brings with it all the faces in the world, and its tremor comes from the fact that it knows itself to be mortal". He