Pinocchio

"My boy!" cries Geppetto. "You saved my life and now you are dead." He is very sad. Then the Blue Fairy arrives. "Pinocchio, you were good," she says. "You saved Geppetto's life. Now you can be a real boy."

If my nose is getting longer when I tell a lie, now, my nose is very long. Everyone would have lied at least at once, so if our nose gets long like Pinocchio, it will be difficult to live by long nose. Pinocchio tells us that you should not tell a lie.