A long screed carved into a floor by a schizophrenic French farmer has become Paris’ most controversial artwork. “Since the Plancher de Jeannot (Jeannot’s Floorboards) went on display last week, it has created an unprecedented stir. ‘People are terribly disturbed by it. Some feel it should not be on public view.’ The carving – 80 lines of text, in capital letters with no punctuation – contains references to Hitler, to Popes and to an infernal machine that controls humans. The work raises painful questions about whether madness can be artistic.”