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.

If we have Osama bin Laden in our sights and the Pakistani government is unable or unwilling to take them out, then, I think that we have to act and we will take them out. We will kill bin Laden. We will crush al Qaeda. That has to be our biggest national security priority.

You know, the bowling alley doesn‘t seem to be improving my game. That‘s the one thing I have noticed.

Any so-called leader who does not take this issue (climate change) seriously or treats it like a joke is not fit to lead

I believe we can seize this future together, because we are not as divided as our politics suggests. [...] We are greater than the sum of our individual ambitions. [...] We are and forever will be the United States of America. [...] We will continue our journey forward and remind the world just why it is that we live in the greatest nation on Earth.

Our hearts are broken today for the parents and grandparents, sisters and brothers of these children and the families of the adults we lost....May god bless the memory of the victims and in the words of scripture heal the broken hearted and bind up their wounds.

We want our children to live in an America that isn't burdened by debt, that isn't weakened by inequality, that isn't threatened by the destructive power of a warming planet.