Kabbalah zu Mischlej 20:5

The fool, then, has no desire [to comprehend] the hidden things which require understanding to discover. Thus [Solomon] said, A man of understanding can draw them out (Prov. 20:5).⁹The Masoretic text of the Bible reads tevunah (singular), whereas Cordovero wrote tevunot (plural). This inaccuracy is probably the result of his citing the verse from memory. [The fool] only [desires] to air his thoughts [with regard to] the revealed matters which serve as a garment [concealing] the esoteric aspects and which appear to constitute the plain meaning of the subject.¹⁰The Zohar III, 152a, reacts furiously against such people. Cordovero cites this passage in extenso in pt. I, chap. 2. These matters are indeed revealed to the heart, but they are not [revealed] to the hearts of the enlightened—only to the hearts of fools like him. This is the meaning of to air his thoughts: It refers to his limited mental capacity.