I have a million ideas. The country can't afford them all.

I have a lifetime of experience that I will bring to the White House. I know Senator McCain has a lifetime of experience that he will bring to the White House. And Senator Obama has a speech he gave in 2002.

I think that I am the person who can do all aspects of the job. I think I'm the person best prepared to take the case to the Republicans. And I think that at the end of the day, it's not so much electability. It is who the American people can believe can keep them safe, can get the economy moving again, can get incomes rising, can build on the progressive accomplishments of President [Barack] Obama.

It is, from my perspective, less important today looking backwards as to why these militants decided they did it than to find them and bring them to justice, and then maybe we'll figure out what was going on in the meantime.

I want to congratulate Senator [Bernie] Sanders for the extraordinary campaign.... He has spent his long career in public service, fighting for progressive causes and principles, and he has excited millions of voters, especially young people.

I learned some valuable lessons about the legislative process, the importance of bipartisan cooperation and the wisdom of taking small steps to get a big job done.

Never stop believing that fighting for what is right is worth it.