 Key works from this period include a very loose translation of Shaftesbury’s An Inquiry Concerning Virtue and Merit, in which Diderot turns moral sense theory into a kind of aesthetics of Nature; Pensées philosophiques, a work of provocative philosophical propositions concerning matter, motion, nature and science; La Promenade du sceptique, a philosophical dialogue which was written in this period but only published a century later; and Les Bijoux indiscrets, which is best described as philosophical pornography.