Castles in the Air, a short novel or perhaps more like a collection of short stories with memories of a French rogue in the early 19th century Paris, was published in 1921 and about it I quote from the foreword: "In very truth my good friend Ratichon is an unblushing liar, thief, a forger--anything you will; his vanity is past belief, his scruples are non-existent. How he escaped a convict settlement it is difficult to imagine, and hard to realize that he died--presumably some years after the event recorded in the last chapter of his autobiography--a respected member of the community, honoured by that same society which should have raised a punitive hand against him."