“Salt is a good thing. But if the salt loses its salty taste, you can’t make it salty again.
“You are the salt of the earth. But if the salt loses its taste, it cannot be made salty again. Salt is useless if it loses its salty taste. It will be thrown out where people will just walk on it.
When you talk, you should always be kind and wise. Then you will be able to answer everyone in the way you should.