Matthew Henry Commentary Proverbs 10:6-9

"Blessings are upon the head of the righteous; But violence covereth the mouth of the wicked. The memory of the righteous is blessed; But the name of the wicked shall rot. The wise in heart will receive commandments; But a prating fool shall fall. He that walketh uprightly walketh surely; But he that perverteth his ways shall be known." — Proverbs 10:6-9 (ASV)

Fools are not fit to be trusted, nor to have any honor. Wise sayings, as a foolish man delivers and applies them, lose their usefulness.