The Ass, the Table, and the Stick
In this English folktale, a young man works for a year and earns a magic donkey. An innkeeper tricks him out of it, so he works for another year and earns a magic table. The same innkeeper tricks him out of this. For his next job, the boy earns a magic stick. This helps the young man get his donkey and table back, as well as to marry his true love. Unfortunately, in winning the girl the young man shows a side of his personality that will make readers wonder if he really deserved all the magical help!
The Brothers Grimm would have us believe that this folktale teaches a valuable lesson by documenting the fall of a spoiled princess who judges potential suitors by looks alone and is so ill-mannered that she says cruel things about them to their faces. Through her punishment (being married to a beggar street musician), we also learn that she has almost no household or practical skills. I’m not sure though about the central idea that the best way to teach humility is to publicly humiliate a person. Isn’t this what the princess was punished for at the beginning of the story? 
This Norwegian folktale is about a young man whose poor father sends him out into the world to earn a living. He joins a group of robbers, and is so good at stealing that he becomes their leader. The Master Thief returns home a rich man and decides to marry the Governor’s daughter. In order to marry the girl, he must prove how good a thief he is. This story goes against the English idiom: Crime doesn’t pay. The moral seems to be that crime does pay… but only if you are very good at it! 
It’s time for another folktale. This one is about dissatisfaction and greed. A poor fisherman catches an enchanted fish and sets it free. When he tells his wife, she is angry that he did not demand a wish in return. She sends him to ask the fish for a nicer house. When the fish grants this, the wife becomes greedy. She sends her husband back several times to ask for bigger and bigger things. Her final wish is so outrageous that the fish either will not or cannot grant it. The fisherman is no doubt happy with what happens next.