Musar su Salmi 69:37

From this passage we can see that one should join up with Torah scholars along the road and avoid the company of the ignorant, just as the child did. Secondly, from this incident we learn of the great humility of Rabbi Yehudah and Rabbi Yitzchak. For they were leaders of the generation, yet when they heard that the child was the son of Rav Hamnuna the Elder they carried him upon their shoulders in order to listen to his Torah. Nor were they too proud to hear Torah even from the mouth of a child. For a man who renders himself like the dust upon which all trample is called, “Beloved above and valued below.” Moreover, he is called one of the “lovers of Hashem,” concerning whom it is written, “And the lovers of His Name will dwell in it [in Tzion]” (Tehillim 69:37).