Arrogance is the byproduct of our egos. We can solve any problem if we go to the root of the cause. We must do the same here. We must understand the ego and detach from it. I can guarantee the result would be that we become humans in the real sense of the word: no more judging, no more arrogance, no more self-importance. So, after all, this question drives us to how we can get rid of the ego? The answer will always be the same. We cannot fight it because it is part of us, and fights are feeding it. We must let go of it. We must stop feeding it. Once again, in my humble opinion, we return back to spirituality, where we can understand that look, smartness or richness have no value, and they do nothing more but feeding our egos.