Cloth-eared bint?

I'm wondering if i'm reading this correctly...
Reports that say something hasn't happened are interesting to me, because as we know, there are known unknowns; there are things we know we know. We also know there are known unknowns; that is to say we know there are some things we do not know. But there are also unknown unknowns -- the ones we don't know we don't know.

Thank you Mr. Donald Rumsfeld.