KC
Yesterday I was put on to that maxim – or some version of - "know thyself."
It's surprising to know that you know yourself.
Know you know.
Know what you like.
Know what you don't like.
Know why you know.
Know how you know.
You know.
Know your past. No nostalgia.
It is something to be be able to know what others know or don't know.
To put others onto knowledge.
Know the system, the institution, the building, the walls, the street.
Know nothing as a way to open.
Humility as a way to fight jealousy and fear. 
Thanks for the time, 
CR