Known knowns The message is: That there are known 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 And each year we discover a few more Of those unknown unknowns. —Feb. 12, 2002, Department of Defense news briefing | Happenings You're going to be told lots of things. You get told things every day that don't happen. It doesn't seem to bother people, they don't— It's printed in the press. The world thinks all these things happen. They never happened. Everyone's so eager to get the story Before in fact the story's there That the world is constantly being fed Things that haven't happened. All I can tell you is, It hasn't happened. It's going to happen. —Feb. 28, 2003, Department of Defense briefing |