Was one of the great novels of the Enlightenment written by a man who thought he was a werewolf?

Surreal, mysterious and with an outlandish origin story, Jan Potocki’s The Manuscript Found in Saragossa has amassed a cult following that includes Salman Rushdie and Jerry Garcia. But it’s the book’s global humanism makes it relevant now, say the curators of a new exhibitionA young Walloon officer called Alphonse van Worden travels through the Sierra Morena on his way to…