“Speak not in the ears of a fool: for he will despise the wisdom of thy words.”
Proverbs 23:9 (KJV)
Context Reading
7For as he thinketh in his heart, so is he: Eat and drink, saith he to thee; but his heart is not with thee. 8The morsel which thou hast eaten shalt thou vomit up, and lose thy sweet words. 9Speak not in the ears of a fool: for he will despise the wisdom of thy words. 10Remove not the old landmark; and enter not into the fields of the fatherless: 11For their redeemer is mighty; he shall plead their cause with thee.