Proverbs 18:2

“A fool hath no delight in understanding, etc.] In natural understanding, and in the improvement of his mind in it; he delights not in books, nor in the conversation of men of learning and sense: or in spiritual understanding, in the understanding of spiritual things; these are foolishness to a natural man; nor does he delight in reading the Scriptures, nor in hearing the word, and attendance on it in the house of God, but is weary of such exercises; but that his heart may discover itself; and the folly that is in it: such men only desire to have some knowledge and understanding, to make a show of it, that they may be thought to be wise, and to be capable of talking of things as if they…”

“that his heart . . . itself--that is, takes pleasure in revealing his folly (Pro 12:23; Pro 15:2).”

“Another form of egotism. In “understanding,” i. e., self-knowledge, the “fool” finds no pleasure; but self-assertion, talking about himself and his own opinions, is his highest joy. return to 'Top of Page'”

“Understanding - In getting sound and saving, knowledge. The discovery - In uttering that folly and wickedness which is in his heart. Proverbs 18:3”

“fool: Pro 1:7, Pro 1:22, Pro 17:16; Psa 1:1, Psa 1:2; Mat 8:34; Co1 8:1 but: Num 24:15, Num 24:16; Co1 14:12; Phi 1:15; Pe2 2:15-19 Proverbs 18:3”

“2 The fool hath no delight in understanding; But only that his heart may reveal itself therein. The verb חפץ forms the fut. יחפּץ as well as יחפּץ; first the latter from חפץ, with the primary meaning, to bow, to bend down; then both forms as intransitive, to bend oneself to something, to be inclined to something, Arab. 'ṭf. (Fl.). תּבוּנה is here the intelligence which consists in the understanding of one's own deficiency, and of that which is necessary to meet it. The inclination of the fool goes not out after such intelligence, but (כּי אם־; according to Ben-Naphtali, כי־אם) only that his heart, i.e., the understanding which he thinks that he already possesses, may reveal itself, show…”