You never cede control of your own ability to be successful to something called racism.

We know that there are unaccounted-for Scud and other ballistic missiles in Iraq. And part of the problem is that, since 1998, there has been no way to even get minimal information about those programs except through intelligence means.

There's no doubt that it's still a dangerous place, Afghanistan. The fortunate thing is that the United States was helping to provide security for Chairman Karzai. And it shows that the United States is committed to that regime.

Once a month I play with a chamber music quartet. I play almost no solo music anymore because I so enjoy the interaction. The members of my quartet have become some of my best friends and so I really enjoy it now in ways that I didn't before.

I know that people look at my life and ask, "How can I achieve some of those things?" So, I suppose in that sense, yes, I'm a role model. But I try to think of myself more as a mentor, as somebody who I hope young people feel comfortable approaching or writing to.

My mom was a teacher - I have the greatest respect for the profession - we need great teachers - not poor or mediocre ones.

What we will not wait for is that particular nexus of terrorism, weapons of mass destruction that is extremism, and the technology to come together in a way that is harmful to the United States.