Proverbs 20:15 - Matthew Poole's English Annotations on the Holy Bible

There is gold, to wit, in the world, in divers men's hands, by whom it is highly prized. But the lips of knowledge are a precious jewel; but wise speeches proceeding from an understanding or honest heart are of far greater worth and use, both to him that uttereth them, and to those that receive and improve them to their own benefit.