Thought leaders and Ignorance

Self proclaimed  or labeled ‘Thought leaders’ lead me to think only of these lines:-

Phenella writes in “The Unwritten Comedy”.
“To be ignorant of many things is expected
To know you are ignorant of many things is the beginning of wisdom.
To know a category of things of which you are ignorant is the beginning of learning.
To know the details of that category of things of which you are ignorant is to no longer be ignorant.”