הלוך [הוֹלֵ֣ךְ] אֶת־חֲכָמִ֣ים וחכם [יֶחְכָּ֑ם] וְרֹעֶ֖ה כְסִילִ֣ים יֵרֽוֹעַ׃
He that walketh with wise men shall be wise; But the companion of fools shall smart for it.
Read Jewish philosophical commentary on Proverbs 13:20: and classical philosophical sources.