"If I do, I say so. That's the only way out of that. If there are three words that need to be used more in American journalism, commentary, politics, personal life... it's the magic words "I don't know." I mean, there are certain basic principles, like the dignity of the individual and the individual's responsibility, and certain basic economic principles, like how when something costs less, more of it will be consumed... There are certain things that I feel pretty confident about."