The Iron Man is a fascinating collection of stories, translated here for the first time, by Louis-Sébastien Mercier, a unique writer whose originality and enterprise has never yet been given the full credit that it deserves. From an early contribution to the development of the literary vampire to a pair of revealing philosophical spectacles, from a world that seems to be the best of all possible worlds to interplanetary voyages, and the eponymous “Iron Man,” a precursor of superhero fiction, many of Mercier’s visionary fantasies are still fresh and original today, his exploratory zest not having been weighed down by the burden of subsequent sophistication.