Donald Rumsfeld: miskend taalkunstenaar

His reminder in passing that there are also (i) areas of knowledge that we are aware of possessing and (ii) areas of ignorance that we are aware of seems to allude to a familiar old Persian apothegm:

He who knows not, and knows not that he knows not, is a fool; shun him.
He who knows not, and knows that he knows not, can be taught; teach him.
He who knows, and knows not that he knows, is asleep; wake him.
He who knows, and knows that he knows, is a prophet; follow him.

Geoffrey K. Pullum verdedigt in zijn Language Log over de miskende taalkunstenaar Donald Rumsfeld.