As long as countries like China keep going all in on clean energy, so must we.

Let us each of us now embrace with solemn duty, and awesome joy, what is our lasting birthright. With common effort and common purpose, with passion and dedication, let us answer the call of history and carry into an uncertain future that precious light of freedom.

I've got two daughters. 9 years old and 6 years old. I am going to teach them first of all about values and morals. But if they make a mistake, I don't want them punished with a baby.

We are a people of improbable hope.

America is a nation of immigrants. And so the question is, how do we make legal immigration faster, less bureaucratic, cut the red tape?

We've got to be able to distinguish between dangerous individuals who need to be incapacitated and incarcerated versus young people who are in an environment in which they are adapting, but if given different opportunities, a different vision of life, could be thriving the way we are. That's what strikes me. There but for the grace of God. And that, I think, is something that we all have to think about.

When we think of the major threats to our national security, the first to come to mind are nuclear proliferation, rogue states and global terrorism. But another kind of threat lurks beyond our shores, one from nature, not humans - an avian flu pandemic.