Proverbs 9:7-9

He that reproveth a scorner getteth to himself shame: And he that rebuketh a wicked man getteth himself a blot. Reprove not a scorner, lest he hate thee: Rebuke a wise man, and he will love thee. Give instruction to a wise man, and he will be yet wiser: Teach a just man, and he will increase in learning.