What is the theme for Dr know all by Grimm brothers?

A theme visited in the majority of the fairy tales is the attempt to teach a moral. The stories are often told with the intention of teaching a moral lesson. Lessons taught by the stories include the importance of never giving up on a dream, never underestimating oneself, and never taking advantage of other people. Readers of the tales are also taught the potential pitfalls of trying to trick a person or blame someone else for a crime they did not commit.