Little by little does the trick.
Don't kill the goose that lays the golden egg.
A fair-minded person tries to see both sides of an argument.
A Fox entered the house of an actor and, rummaging through all his properties, came upon a Mask, an admirable imitation of a human head. He placed his paws on it and said, "What a beautiful head! Yet it is of no value, as it entirely lacks brains."
Distrust interested advice.
You can fool people some of the time, but you can't fool them all of the time.