Note 4. Lehavin Ma SheKasuv BiPri Eitz Chayim Class 3 Tanya Lectures – Kuntress Acharon

Torah is “From the top down” and is therefore perfect even as it is limited in this world. The difference between Chochmas Chitzoniyus (Secular Knowledge) and Torah. The Ohr Neshama is limited, but G-dly, and Torah (Chochma Ilaa) passes through it Bderech Maavir, while other Chochmos pass through Ohr Nefesh and Ruach, that are creations and inexact, and therefore cover over the G-dliness that is behind (the truth of ) this wisdom.