Shalom Of Torah

Daas Chachma U'Mussar volume 1 maamer 21

True shalom is the combination of opposites.  The giving of the Torah is a joining of G-dly wisdom with the brain of mankind.  It is a joining of polar opposites.  This is the  shalom that Torah produces.  Presumably, this idea would be the explanation of  learning Torah כל העוסק בתורה לשמה משים שלום בפמליא של מעלה ובפמליא של מטה (Sanhedrin 99b) and ת"ח מרבים שלום בעולם and other such statements.