עֲטֶ֣רֶת חֲכָמִ֣ים עָשְׁרָ֑ם אִוֶּ֖לֶת כְּסִילִ֣ים אִוֶּֽלֶת׃
지혜로운 자의 재물은 그의 면류관이요 미련한 자의 소유는 다만 그 미련한 것이니라
Rashi
the folly of the foolish is folly The ruin of the fools is the folly that they neglected to learn wisdom.
Malbim
It can also be explained: The wealth of the sages is their crown. That is to say, [their crown is] that which they, through their wisdom, separate from the desires of the world and are happy with their portion, since that is true wealth — one who does not desire [anything], such that he does not lack anything. For the wealthy person who is desirous and his eye will never be satiated (alluding to Ecclesiastes 4:8), he is truly the poor one.