What is the meaning of "Tavus Nofes"?
Rashi #1: It will trample with the foot. This is like "Yavus Tzareinu" (Tehilim 60:14).
Rashi #2: One who is like satiated, and does not desire Divrei Torah, even reasons that are settled on the heart, are not important to him.
What do we learn from "Nefesh Seve'ah Tavus Nofes v'Nefesh Re'evah Kol Mar Masuk"?
Bava Kama 92b: People say that a dog will eat dung (Rashi - rocks) when hungry.
Rashi #1: One who is hungry, everything is sweet to him.
Rashi #2: One who desires Divrei Torah, even matters that come to him with bitterness and toil, are sweet to him.
Ma'alos ha'Torah (DH R. Shimon) #1: This refers to a Chacham who learned, and afterwards separated.
Ma'alos ha'Torah (DH R. Shimon) #2: Just like a Nafah (sifter) gives out flour by itself, bran by itself
