Whether you love him or hate him, Former Secretary of Defense Donald Rumsfeld has been an interesting character in the Defense Industrial Complex. He is oft quoted from a speech he gave in 2002 in regards to the Iraq war.
The fact that I was able to build this into a briefing at work, make a point and not get laughed at was pretty amusing.
It goes a little something like this:
"Reports that say there's -- that something hasn't happened are always interesting to me, because as we know, there are known knowns; there are things that we know that 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."
While on the surface it seems like a Clintonesque diatribe on what "is is", but if you de-construct it, you see how that jumble of words actually has meaning and application towards Information Security and Operations Security in general.