Siman 572

(129.) I heard from his holy mouth o.b.m. that he said: "This is a great evil inclination for many people — and particularly those of high standing — that for one matter that seems to them to be a mitzvah they abandon everything and come through this to many corruptions. And particularly when they come through this to controversies etc." (Likutay Halachos, Laws of Robbery, Law 5, letter 10.)