Lomed Mkol Adam-
You have either never read the book or you are ignorant in the hashkafos of litvishe yeshivos. The book is nothing other than an elegant and eloquent interpretation of Sha’ar Daled of Nefesh Hachayim, and that is clear to anyone that has gone through the yeshiva system and heard the classic shmuessin on the value and the purpose of limud hatorah.
And please, “traditional litvishe haskafa” does not talk about “hergesh” and what not. Case in point, learning lishma means l’sheim torah, not l’shem shamayim, as unfeeling as that sounds. There’s a reason for the term “kalte litvak.”