Proverbs 15:14 (BSB)

A discerning heart seeks knowledge, but the mouth of a fool feeds on folly.

From Proverbs 15. Also in the ESV.

Commentary on Proverbs 15:14

• Matthew Henry (Presbyterian), Matthew Henry's Complete Commentary on Proverbs 15:14: Here are two things to be wondered at: - 1. A wise man not satisfied with his wisdom, but still seeking the increase of it; the more he has the more he would have: The heart of him that has understanding, rejoices so in the knowledge it has attained to that it is still coveting more, and in the use of the means of knowledge...
• John Gill (Reformed Baptist), Exposition of the Old and New Testaments on Proverbs 15:14: The heart of him that hath understanding seeketh knowledge,.... He that has in his heart an understanding of divine and spiritual things, of the Gospel and of the truths of it, will seek earnestly and diligently in the use of proper means after more knowledge; as he will desire to know more of Christ, his person, offices, and grace, he will follow on to know...
• Jamieson-Fausset-Brown (Reformed), Commentary Critical and Explanatory on the Whole Bible on Proverbs 15:14: (Compare Pro 10:21-22). The wise grow wiser, the fools more foolish (Pro 9:9).
• Keil & Delitzsch (Lutheran), Biblical Commentary on the Old Testament on Proverbs 15:14: Pro 15:14 14 The heart of the understanding seeketh after knowledge, And the mouth of fools practiseth folly. Luther interprets רעה as metaphor. for to govern, but with such ethical conceptions it is metaphor. for to be urgently circumspect about anything (vid., Pro 13:20), like Arab. ra'y and r'âyt, intentional, careful, concern about anything.