A soft answer breaks the rage, a tough answer encourage the fury.
Being cheerful keeps you healthy
Whoever stubbornly refuses to accept criticism will suddenly be broken beyond repair.
Answer not a fool according to his folly,lest thou also be like unto him.
He mocks proud mockers but gives grace to the humble. from the Book of Proverbs
Anxiety in a man's heart weighs him down, but a good word makes him glad.