As for Israel, our friendship is rooted deeply in a shared history and shared values. Our commitment to Israel's security is unshakeable. And we will stand against attempts to single it out for criticism in international forums.

We have to be successful at the cutting-edge industries of the future like Twitter. But we also have always been a country that makes stuff.

My particular worries on any given day - how I'm doing in the polls or what somebody is saying about me... for good or for ill - isn't particularly relevant. What is relevant is: What am I building that lasts?

Some heinous crimes justify the ultimate punishment.

I am going to be able to present to the incoming administration a country that is stronger. A federal government that is working better and more efficiently. A national security apparatus that is both more effective and truer to our values. Energy policies that are resulting in not just less pollution, but also more jobs.

All across the world, ...increasingly dangerous weather patterns and devastating storms are abruptly putting an end to the long-running debate over whether or not climate change is real. Not only is it real, it's here, and its effects are giving rise to a frighteningly new global phenomenon: the man-made natural disaster.

If I'm president, some day, young kids will look at the world differently. They will say, I could be president some day. They couldn't have said that before I came along. The world will see the United States in a different context, as a country of true opportunity for all.