It is known that as more you know, as more you recognize you know nothing. Meaning a dump thinks he's einshtein while a philosopher thinks he's incompetent of thinking. How much do you have to know then in order to accept your knowledges?
How much do you have to know to know you know?
Surely you have to know nothing to be satisfied by it
With each new information you see possibilities, and you see new thing that you dont know. So only really happy person is dumb one 
