Some of these stories would get more than 4 stars, some of them less. I didn't really care for the titular story, and a few of the other short, fable-like ones. Some of the longer stories I really, really liked, but they didn't have satisfying conclusions. My favorite story, for the most part, was "Extract From Captain Stormfield's Visit to Heaven." The ideas about Heaven were so fresh and interesting. I'd never read any other version of the afterlife like it. But the ending just kind of petered out, which I thought was a bummer.
Mark Twain has a way of writing that makes it feel as if you can really hear people telling a story. It's like he's managed to take the voice of a storyteller and transcribe it exactly. Some of my other favorites were "A Medieval Romance" and "The 1,000,000 Pound Bank Note." The first of these also has an unsatisfying ending, but in a way that felt appropriate to the story. I found myself eager to come up with my own version of events to fill in the blanks. And the latter was fun because of how satisfactory the ending was. It put a nice guy in a really weird, stressful situation, but then in the end everything worked out perfectly for all people involved. Sometimes it's nice to get a win.
So... yeah. Mark Twain is awesome. I definitely like his fiction more than his memoirs, though.