The tongue has the power of life and death.
Lazy hands make a man poor, but diligent hands bring wealth.
He mocks proud mockers but gives grace to the humble. from the Book of Proverbs
Jealousy is cruel as the grave: the coals thereof are coals of fire, which hath a most vehement flame. [Therefore do not compare your lot with another's lest you see their advantages and lose the joy of what you already have.]
The fear of the Lord is the beginning of wisdom.
Whoever stubbornly refuses to accept criticism will suddenly be broken beyond repair.