Department of Defense news briefing (12 February 2002)
Variant:
Now what is the message there? The message is that there are no "knowns." There are things we know that we know. There are known unknowns. That is to say there are things that we now know we don't know. But there are also unknown unknowns. There are things we do not know we don't know. So when we do the best we can and we pull all this information together, and we then say well that's basically what we see as the situation, that is really only the known knowns and the known unknowns. And each year, we discover a few more of those unknown unknowns.
:It sounds like a riddle. It isn't a riddle. It is a very serious, important matter.
:There's another way to phrase that and that is that the absence of evidence is not evidence of absence. It is basically saying the same thing in a different way. Simply because you do not have evidence that something exists does not mean that you have evidence that it doesn't exist. And yet almost always, when we make our threat assessments, when we look at the world, we end up basing it on the first two pieces of that puzzle, rather than all three.
:* Extending on his earlier comments in a press conference at NATO Headquarters, Brussels, Belgium (6 June 2002) http://www.nato.int/docu/speech/2002/s020606g.htm
2000s
Donald Rumsfeld: Thing
Donald Rumsfeld is U.S. Secretary of Defense. Explore interesting quotes on thing.“It's a difficult thing today to be informed about our government even without all the secrecy.”
As quoted in The Chicago Tribune (13 April 1966)
1960s
on CBS' Evening News, October 9, 2001 http://www.defenselink.mil/Transcripts/Transcript.aspx?TranscriptID=2051
2000s
Talking to reporters about whether President Bush knows about equipment inadequacies in Iraq http://www.defenselink.mil/Transcripts/Transcript.aspx?TranscriptID=1985
2000s
DOD news briefing following the fall of Baghdad (11 April 2003) http://www.defenselink.mil/transcripts/2003/tr20030411-secdef0090.html
As quoted in "My Date With Rummy: Now 84, The Former Secretary Of Defense Is As Wily As Ever" https://taskandpurpose.com/donald-rumsfeld-secretary-defense (12 June 2017), by Adam Linehan, Task & Purpose
2010s