Another good short story in the genre of rationalist fiction: http://www.yudkowsky.net/other/fiction/the-sword-of-good http://www.yudkowsky.net/other/fiction/t

Another good short story in the genre of rationalist fiction: http://www.yudkowsky.net/other/fiction/the-sword-of-good http://www.yudkowsky.net/other/fiction/the-sword-of-good (And of course there's also Harry Potter and the Methods of Rationality.)