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.