What is the moral of The Frog King?
A promise you did not mean is still a promise, and somebody is always keeping count.
What that actually means
Most retellings turn this into a story about looking past appearances, which requires a kiss and a princess who is sweet. The Grimm version is sharper. She is not sweet. She lies to get what she wants, and the only reason she keeps her word is that her father will not let her out of it. The spell breaks when she stops being polite. Kindness is not what saves the prince here. Someone simply making her finish what she started is what saves him.
What happens in the story
A princess drops her golden ball into a well and promises a frog anything to get it back. She does not mean a word of it. Her father makes her keep every word of it, and the frog is turned back into a prince not by a kiss but by the moment she finally loses her temper.
Read The Frog KingQuestions to ask afterwards
The lesson lands better when a child works it out themselves.
- The princess promised something she did not mean. Is that the same as telling a lie?
- Her father never shouts at her once. Do you think that made it easier or harder for her?
- The frog keeps asking for more and more. At what point would you have said no?
- Heinrich never tells anyone about the bands round his heart. Why do you think he kept it to himself?
- The frog turns back into a prince when the princess loses her temper, not when she is kind to him. Does that seem fair to you?