I believe keeping families together is in the best interest of the United States. And in the past the level of deportations, and the mindlessness with which they've been carried out, that's hurt the United States.

We took out the safe haven in Afghanistan, but now there is, undoubtedly, a larger safe haven and we must rise to this occasion in collaboration and with alliances to confront it, and invest in the future much better human intelligence so we know what the next steps are.

Romney economics would spell disaster for America's middle class. In this economy there are shipbuilders and ship wreckers.

To those who say climate change is not caused by human activity or that addressing it will harm the economy, let's encourage them to go to college, too, and to study physics and to study economics, but for the rest of us, let's get to work.

Our parents and grandparents understood this truth deeply. They believed - as we do - that to create jobs, a modern economy requires modern investments: educating, innovating and rebuilding for our children's future. Building an economy to last, from the middle class up, not from the billionaires down.

Look, being president of the United States is the toughest job in the world and I can tell you, as someone who has worked with Secretary Clinton and competed against her that she is a tough person who is ready to do this job.

As Americans, we have shown ourselves to have the greatest military on the face of the planet, but we are not so very good at anticipating threats and appreciating just how difficult it is to build up stable democracies, to make the investments and sustainable development that we must as a nation if we are to attack the root causes of these sorts of instability.