Part of Twain’s artistry is to attack something while not appearing to be attacking it. Explain how he does this in Chapter 31.

This section of the novel dramatically forces Huck to finally decide what he believes about slavery, and, as such, solidify his own morality. The most powerful scene occurs when Huck writes a letter to Miss Watson explaining where Jim is, only to tear it up, accept his fate no matter what the consequence of following his conscience, and set out to free Jim. Huck is willing to sacrifice his soul for Jim's freedom, showing a tremendous amount of personal growth. It is in this way that Twain attacks the very centre of slavery without outwardly attacking it.