"L'Écume des jours," written by Boris Vian, is a surreal novel published in 1947. It tells the story of Colin, a wealthy young man, and his love for Chloé, a woman who falls ill due to a water lily growing in her lungs. The narrative explores themes of love, illness, and the absurdity of life, set against a backdrop of whimsical and imaginative settings. The novel is notable for its inventive language and playful use of metaphors, reflecting Vian's unique style. It has been adapted into various forms, including films and stage productions, highlighting its enduring influence in literature and popular culture.