1. Once upon a time the sun and the sky were arguing
Once upon a time the sun and the sky were arguing . The sky said to the sun. — Sun, we don’t need you . My terrestrial people will live without you. The sun answered. — Well, I shall leave, but you will regret. The sun left the sky and went away. After that dispute the Earth got dark. The people  left the earth. And at that moment the sky understood, that the sun was very important for the Earth. And it asked the sun to come back. And the sun came back. From that day on the sun and the sky didn’t argue with each other.
The fable teaches, that you must not be selfish, self-centered.