There's a new novel called _A Certain Ambiguity_ by Gaurav Suri (I think I have the spelling right). A big chunk of the novel is about the quest for certainty in general, and whether it can be found in mathematics, and talks about how upsetting it could be to realize that noneuclidean geometries are not only equally viable mathematically but might actually be the real geometry of the universe (as in general relativity). Another big chunk talks about infinity and has some really nice conversations aimed at exactly what you're trying to do: clear up the misconceptions. It might be a fun read and it's a good (new, just published a couple months ago) book to plug for people interested in thinking more about the ideas. But emphasis on the fact that it's a novel with some math in it (it's not a math book built around a story). --Joshua Zucker