Marquis de Sade Marquis de Sade Donatien Alphonse François, Marquis de Sade (; 2 June 1740 – 2 December 1814), was a French nobleman, revolutionary politician, philosopher, and writer, famous for his libertine sexuality. His works include novels, short stories, plays, dialogues, and political tracts; in his lifetime some were published under his own name while others appeared anonymously, which Sade denied having written. Sade is best known for his erotic works, which combined philosophical discourse with pornography, depicting sexual fantasies with an emphasis on violence, suffering, criminality, and blasphemy against Christianity. He gained notoriety for putting these fantasies into practice with both
Alphonse François Renard Alphonse François Renard Alphonse Francois Renard (27 September 18429 July 1903), Belgian geologist and petrographer, was born at Ronse, in East Flanders, on 27 September 1842. He was educated for the church of Rome, and from 1866 to 1869 he was superintendent at the College de la Paix, Namur. In 1870 he entered the Jesuit Training College at the old abbey of Maria Laach in the Eifel, and there, while engaged in studying philosophy and science, he became interested in the geology of the district, and especially in the volcanic rocks. Thenceforth he worked at chemistry and mineralogy, and qualified