We've taken bold action at home by making historic investments in renewable energy, by putting our people to work increasing efficiency in our homes and buildings, and by pursuing comprehensive legislation to transform to a clean energy economy.

What is certainly true is that the United States has to have a presence to promote the values that we care about.

People will still be looking to the United States. Our example will still carry great weight.

I don't buy the hype when everybody is saying how wonderful things are and how great I am, and I don't get too down when people say, "This is a disaster and he's done for."

FDR, JFK, LBJ [all Democratic presidents ] we have a pretty long list of presidents who maybe were not entirely forthcoming with intelligence information before they went to war, so I'd be cautious against making legal cases against the administration.

If you go out and make some things happen, you will fill the world with hope.

If John McCain wants to have a debate about who has the temperament, and judgment, to serve as the next Commander-in-Chief, that's a debate I'm ready to have.