These are the things that the reader can tell that the speaker, Huck Finn, values. In this passage, we learn that Huck values freedom because he tells us that when he left the widow he was "free and satisfied." We also learn that Huck likes speaking in a plain speech because of all the colloquial words and dialect he employs. Finally, we can tell he likes mischief because he wants to join the band of robbers that Tom Sawyer started.
