I absolutely love chapter 16. As far as I know, it's the first time in English literature that we have real pyschological insight into a character--the kind of interior monologue that goes on for pages. This isn't just thinking a few thoughts aloud. We're even made aware that passes while Emma thinks.
We wander along with Emma's thoughts, while they contradict themselves a few times, are generous about the Knightleys, are quite remorseful and clearsighted about most of her blunders, and finally they wind up in a place where I think we can really get close to Emma and understand how she thinks.
Brilliant stuff.
And I love the William Cox line.