Words for Thought

Hmmm. If you had to pick "10 Novels That Will Sharpen Your Mind," which would you pick? Here are Scientific American's choices, plus a synopsis of each one (and, as is often the case, the comments following the story are just as interesting, if not more so): http://www.scientificamerican.com/article.cfm?id=fiction-stories-that-sharpen-your-mind