The quote at left has been attributed to many of the world’s wisest people. Certainly the concept of Socratic Wisdom, i.e., “if I’m wise in any sense it’s because I know nothing,” goes back 2300+ years. This from ThoughtCo.com: Socratic wisdom is a sort of humility: it simply means being aware of how little one really knows; how uncertain one’s beliefs are; and how likely it is that many of them may turn out to be mistaken.
In any case, modern-day America has taken the ideas of the “fools and fanatics” and catapulted them to new heights of importance. Anti-vaxxers and climate deniers couldn’t have existed, outside of an infinitesimal fringe, until just a few years ago.