I would go as far as to say emotions and belief being above reason vastly is the biggest cause by far of most harms in the world. If everyone could embrace reason, it wouldn't matter if what you were saying sounded nice or appealing, but rather if it was the truth or not. That's something I've been unfortunately learning in my recent course about communication and public speech, it doesn't matter that much if you are right or not, you just have to sound convincing and captivate people. That's one of the biggest problems our societies face.
Whoever fights monsters should see to it that in the process he does not become a monster. And if you gaze long enough into an abyss, the abyss will gaze back into you