Musar su Geremia 23:19

And see, my brother, a wondrous thing in "the breath of the young students." Even though there is no holiness of thought or cleaving to the L-rd in their speech, the world endures by this breath of their mouths. To what may this be compared? To a poor man who found a rare, precious stone of uncommon powers, to be found only on the crowns of kings. His finding it becomes known to the king, who rewards him with great wealth. Now the poor man who found it, even though he cannot, with his wisdom, conceive of the special properties of the stone, notwithstanding this, the great good of the stone itself and the grandeur of its light bring him all this great good — that he acquires special distinction in the eyes of the king. The very same is true with the Torah of the living G-d. One who wishes to achieve holiness through it does not require great preparation in order to do so; for it itself is holy and exalted beyond measure. And when a man speaks in it, he cleaves to its holiness, as it is written (Jeremiah 23:19): "For whenever I speak in it [Torah], I remember Him even more" [see Nefesh Hachaim]. And a man must just take heed not to do the opposite; that is, not to dim its light by his [tainted] speech. This is the intent of R. Pappa's words to Abbaye: "What about mine and yours?" That is, our Torah in itself is holier than the Torah of the young students, for [in us] it is [accompanied] by holy thought. And Abbaye answered: "The breath of the mouth, etc.," i.e., the defect [of tainted speech] overrides the [holiness of Torah], as we explained.