גַּ֣ם בְּ֭מַעֲלָלָיו יִתְנַכֶּר־נָ֑עַר אִם־זַ֖ךְ וְאִם־יָשָׁ֣ר פָּעֳלֽוֹ׃
Even a child is known by his doings, whether his work be pure, and whether it be right.
Read kabbalistic (mystical) interpretation of Proverbs 20:11: and classical mystical sources.