Usually we take a ‘fool’ to be an unknowdegeable person. A random search for the meaning of ‘fool’ on Google landed me on this definition: ‘a person who acts unwisely or imprudently; a silly person.’ You might have come across quite a number of people (some with earned doctoral degrees from reputed universities) who are foolish in their behaviour. Foolishness is thus not a matter of how much a person know but how a person behaves. That is closer to the definition that we find in the bible where a ‘fool’ is a person who behaves ignoring God (Psa 14:1). Fools not only deny God but also refuse to learn wisdom that comes from God. In addition to being unteachable they cannot be disciplined (Prov 15:5). So, by refusing to learn but guided by their own ‘wisdom’ they end up in trouble always (Prov 14:3). They cause trouble to others as well, as their behaviour is not in line with the expectations of the society and the standards of God (Psa 53:1). Though not exclusive, Ecclesiastes 5:1-7...
“I don't know what I think until I write it down.” ― Joan Didion.