In understanding; in getting sound and saving knowledge, either by his own study, or by the instructions of wise and good men. But that his heart may discover itself. Heb. but (his delight is) in the discovery of his own heart, i.e. in uttering that folly and wickedness which is in his heart; being more forward to speak than to hear, which is one badge of a fool.
Related Commentaries of Proverbs 18:2
Proverbs 18:2
2 A fool hath no delight in understanding, but that his heart may discover itself.