There was a mouse who was always in anguish because he was afraid of the cat. A magician had compassion of him and converted him into… a cat.
But then he started to feel afraid of the dog. So the magician changed him into a dog.
Then he started to feel afraid of the panther, and the magician changed him into a panther.
For which he started to feel afraid of the hunter.
At this point the magician gave up and turned him back into a mouse, telling him: “Nothing of what I do for you is going to be of help to you, because you will always have the heart of a mouse.”