Dunno about how it sounded but here it is transcribed:

Quote:
Reports that say that something hasn't happened are always interesting to me, because as we know, there are known knowns; 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.


Looks clear enough to me.

As for the Persian apothegm, I think they were a bit harsh on the owner of the unknown unknowns. As long as you know there are things you don't know that you don't know you're OK. It's when you don't know that you have unknown unknowns that you're in trouble.