True Genius

it means people who think they are smart are worse than people who are unknowing.

Not people who think they are smart - people who believe that they have answers. We don't know eg what happens after death (or why mathematics works, or even if you all really exist outside of my mind), and we're less of a danger to ourselves when we accept that than when we try to convince one another that our belief is actually a certainty. It's called epistemology and I'm excited to see it in public. This ^ should be article 1.1 of any educational charter, I reckon.