Valerie Tarico said this quote

We humans are prone to err, and to err systematically, outrageously, and with utter confidence. We are also prone to hold our mistaken notions dear, protecting and nourishing them like our own children. We defend them at great cost. We surround ourselves with safe people, people who will appreciate our cherished views. We avoid those who suggest that our exalted ideas, our little emperors, have no clothes.