אִ֭וֶּלֶת קְשׁוּרָ֣ה בְלֶב־נָ֑עַר שֵׁ֥בֶט מ֝וּסָ֗ר יַרְחִיקֶ֥נָּה מִמֶּֽנּוּ׃
Foolishness is bound up in the heart of a child; But the rod of correction shall drive it far from him.
Read kabbalistic (mystical) interpretation of Proverbs 22:15: and classical mystical sources.