What lesson does Huckleberry Finn teach us?

What important lesson does Mark Twain's classic novel Huckleberry Finn convey to its readers? Does it emphasize the importance of individuality and free will, as Huckleberry Finn rebels against societal norms? Or is it a commentary on the harsh realities of slavery and its impact on both enslaved and enslavers? As we delve into the story, are we meant to learn about the complexities of morality and the grey areas that exist between right and wrong? How does the character of Huckleberry Finn challenge our assumptions and beliefs about what it means to be good and true to oneself?