Proverbs 26:3-5

Amplified Bible

³ 
A whip for the horse, a bridle for the donkey,
And a rod for the backs of fools [who refuse to learn].
⁴ 
Do not answer [nor pretend to agree with the frivolous comments of] a [closed-minded] fool according to his folly,
Otherwise you, even you, will be like him.
⁵ 
Answer [and correct the erroneous concepts of] a fool according to his folly,
Otherwise he will be wise in his own eyes [if he thinks you agree with him].^(A)