"The Temptation of Saint Anthony; or, Discovery of the soul" by Gustave Flaubert is a philosophical novel that offers the reader a deep insight into the inner world of the main character - Saint Anthony. The author depicted the internal battle of this ascetic with temptations and demons that try to lead him away from the path of piety. The book provokes reflection on the eternal themes of good and evil, faith and temptation, emphasizing the complexity of the inner world of man. Flaubert reveals the depths of the human soul and the choices it faces, inviting the reader to think about the meaning of life and the struggle for peace of mind.