What is most likely the lesson taught to listeners of "the people could fly"?

When people find themselves enslaved by cruel and unjust forces, it is important never to give up on freedom.

The lesson talks about the importance of true freedom and that no one can capture the spiritual freedom of the people.

Explanation:

"The people could fly" is a lesson which is used to teach the readers of the story about the importance of true freedom making use of the imaginary ability of flight.

In the story it is told that even though the master is able to capture the people, imprison the people in a physical manner but this does not mean that these people can be captured and confined in spiritual and mental way by the master.