As president, I decided that a strong, confident America could advance our national security by engaging directly with the Iranian government. We've seen the results.

When you're out of work and you can't buy a home or you've lost your home and you're worried about paying your bills, then you become more worried about what other folks are doing. And sometimes that organizes itself around kind of a tribal attitude, and issues of race become more prominent.

n case you missed it, this week, there was a tragedy in Kansas. Ten thousand people died - an entire town destroyed.

If we're not there making the argument then the cultural gulf that Republicans try to exploit saying, "Ah, these city slickers: they're all looking down on you, they don't care about you. They're just trying to help out their various special interest constituencies," that argument ends up being successful.

We now live in a world where the most valuable skill you can sell is knowledge. Revolutions in technology and communication have created an entire economy of high-tech, high-wage jobs that can be located anywhere there's an internet connection. And today, a child in Chicago is not only competing for jobs with one in Boston, but thousands more in Bangalore and Beijing who are being educated longer and better than ever before.

In America, we want a peaceful planet. We want people to be able to enjoy their lives and know they're going to have a bright and prosperous future, not be at war. That's our purpose.

America, this is our moment. This is our time. Our time to turn the page on the policies of the past. Our time to bring new energy and new ideas to the challenges we face. Our time to offer a new direction for the country we love.