Mahabharata 10.5.2

तथैव तावन्मेधावी विनयं यो न शिक्षतिन च किंचन जानाति सोऽपि धर्मार्थनिश्चयम्

tathaiva tāvanmedhāvī vinayaṃ yo na śikṣatina ca kiṃcana jānāti so'pi dharmārthaniścayam

Our plain-language meaning of this verse is waiting for scholar review.