"Là-bas" is a novel by the French writer Joris-Carl Hismans, which was published in 1891. The book tells the story of Guillaume de Rennes, a writer from Paris who is outraged by the destructive influence of modern society on moral values. Rennes begins researching Satanism and black magic to understand this dark side of human nature. In his novel, Giesmans explores the themes of faith, society, religion and morality in detail. "Là-bas" became a classic work of decadence and symbolism, in which the author embodied his reflections on existential problems and moral dilemmas of modern society. This book leaves the reader with deep philosophical reflections on good and evil, faith and doubt, morality and sin. "Là-bas" is a work that encourages readers to think carefully about the nature of man and the essence of the soul.