לַחֲכַם־לֵ֭ב יִקָּרֵ֣א נָב֑וֹן וּמֶ֥תֶק שְׂ֝פָתַ֗יִם יֹסִ֥יף לֶֽקַח׃
Der Weise im Herzen wird ein Mann der Unterscheidung genannt; Und die Süße der Lippen erhöht das Lernen.
Rashi on Proverbs
The wise-hearted shall be called understanding He who learned wisdom from his teacher.
Rashi on Proverbs
shall be called understanding. Ultimately, he will be understanding in matters and keen in his wisdom, and they will call him understanding.
Rashi on Proverbs
and the sweetness of speech increases learning When a person explains his words to a pupil and makes his words sweet with reasons, he increases learning.