Pensée juive sur Les Proverbes 15:7

שִׂפְתֵ֣י חֲ֭כָמִים יְזָ֣רוּ דָ֑עַת וְלֵ֖ב כְּסִילִ֣ים לֹא־כֵֽן׃

Les lèvres des sages propagent la science; le cœur des sots n’est qu’insanité.

Akeidat Yitzchak

Rabbi Yannai in the opening Midrash quoted, simply wanted to tell us that the lesson taught by the spice merchant had already been taught by Solomon in Proverbs.