Proverbs 23:9 in the World English Bible
Don’t speak in the ears of a fool, for he will despise the wisdom of your words.
Context
8 The morsel which thou hast eaten shalt thou vomit up, and lose thy sweet words.
9 Speak not in the ears of a fool: for he will despise the wisdom of thy words.
10 Remove not the old landmark; and enter not into the fields of the fatherless: