The edition with Steve Martin's and Roy Blount's introductions is great. It includes Twain's posthumous assessment of the writers who had by then become obscure as "mere humorists" and his note that humor of the mere quality cannot survive forever which he says he means about 30 years. Also his notion that humor is a sort of fragrance that flavors the preaching he confessed he always was up to, and that it depends on such strange strategms as purposeful misspellings or misapprehensions of words. Note Martin's use of "that damn Helen Mirren" in the academy awards presentation, or the notion of "clothes whores" in Hollywood. "Dame" Alec Baldwin says. "Horses" he says later, to which Martin replies, "Horses isn't the plural of whores." Preaching! At least the last one.