“I have undertaken to examine the fashionable tendencies in art and literature and to prove that they have their source in the degeneracy of their authors, and that those who admire them are enthusiastic about the manifestations of moral madness, imbecility and dementia more or less characterized. » MN, 1894. Disturbing for those who read it in the light of our time, this work on the decline of the West and its creators enjoyed immense success across Europe at the end of the 19th century. A flamboyant prose, often burlesque, which has spared no one: Nietzsche, Zola, Ibsen, Verlaine… And to conclude, lines as visionary as they are delirious on the future of the 20th century. Max Nordeau, born in 1849, was a doctor, philosopher, writer, politician...