Never judge a book by its cover. And never, probably, begin a review by quoting that line. But I think it’s appropriate here. For as I gazed at the cover of Francesco Boldizzoni’s “Foretelling the End of Capitalism: Intellectual Misadventures Since Karl Marx ” and noticed the presence of the Grim Reaper, I prepared myself for a detailed discussion of the millenarianism that has characterized leftist thinking, not only since Marx but indeed long before him.