An arrogant person considers himself perfect. This is the chief harm of arrogance. It interferes with a person's main task in life—becoming a better person.
Everything is already perfect. And if you can accept that everything is already perfect, the imperfection is a part of the perfection. What's to worry about?
But pure wit is akin to Puritanism; to the perfect and painful consciousness of the final fact in the universe. Very briefly, the man who sees the consistency in things is a wit - and a Calvinist. The man who sees the inconsistency in things is a humorist - and a Catholic.