Professor Yoshino explains. "Shakespeare calls this a problem of ocular proof, the idea that we need to see evidence before we believe in it -- and that,oftentimes, when metaphysical questions of guilt or innocence are difficult for us to answer, we have a tendency to reduce them to questions that pertain to physical evidence.

VOA: special.2011.06.06

"I really cannot give you an answer in terms of a definitive date by which we are going to be done,"

VOA: standard.2009.09.15

"That's a preliminary communication, meaning we don't quite know the answer yet, but boy it looks like we are on to something big."

VOA: standard.2010.03.25

"And every time I ask myself,as I do, these questions my answer is yes, we are taking the right action, the action that is necessary to safeguard both our country and promote security in the world,"

VOA: standard.2009.09.04