Wednesday, September 12, 2007

"There are known knowns. These are things we know that we know. There are known unknowns. That is to say, there are things that we know we don't know. But there are also unknown unknowns. There are things we don't know we don't know."

Donald Rumsfeld


"It ain't what you don't know that gets you into trouble.
It's what you know for sure that just ain't so."

Mark Twain

No comments: