Three thoughts about This novel
1st
lying is the best disguise during adventures. Huck keeps lying during his adventures. When he is looking for news about him and Jim, he fakes himself as a girl. When this lie is punctured, he come up with another one. He lie about his identity every time he met new people. every time when his lie was punctured, he is able to make up a new one and let people sympathize with him. Also, lying about his real identity can protect him and Jim from the bad guys like the Duck and King.
2nd
good will be rewarded with good, and evil will be rewarded with evil. Jim do no harm to people, so does Huch. At the end of the novel, Jim gets his freedom, and Huck gets his money back and gets rid of his father forever. The duck and the King earned so much from prior cons, but they most of their money, eventually.
3rd
Friendship is more important than money. Huck has 6000 dollars before, but he gives it away easily. But when he lost Jim, he gets anxious, and worry about him so much.