in which he explains that pride leads to conflict and is an obstacle that leads to Halakhic rulings that do not follow the Law
"Those who love Your teaching enjoy wellbeing; they encounter no adversity". It is known that the attribute of pride leads to many conflicts, for one is despised for being prideful. This is not the case when there is peace between Torah scholars, certainly when they have the attribute of humility - "those who love Your teaching enjoy wellbeing", for as Torah scholars they are not in conflict with one another. This leads to "they encounter no adversity": they do not rule in ways that contradict Halakha or law, since they, holding the attribute of peace, have necessarily achieved the attribute of humility, and being humble – their learning serves them and they do not forget it.
Hessed V'Emet, p. 20b, David Idan Press, Djerba, 1916