Proverbs 23:9
King James Version
“Speak not in the ears of a fool: for he will despise the wisdom of thy words.”
Context
6Eat thou not the bread of an evil eye, neither desire thou his dainty meats:
7For as he thinketh in his heart, so he: Eat and drink, saith he to thee; but his heart not with thee.
8The morsel 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 mighty; he shall plead their cause with thee.
12Apply thine heart unto instruction, and thine ears to the words of knowledge.