The fact is, the most painful and tragic lesson of the 20th century was that regimes based on racial superiority and religious hatred can't be trusted to keep their word to the international community.

And if I were the president, I'd go out there and I'd emphasize the things I have done, and I'd say, 'Some things haven't worked, and I'm sorry about that, but I keep trying.' And I'm - and I think the president is a very viable candidate, and you're going to have a real horse race here no matter who the Republican nominee is.

Well, we have to provide the world's best schools. We certainly don't have them, but that's our objective.

Fifty percent of the world's population lives in cities. In a couple of decades, 70 percent of the world's population will be living in cities. Cities are where the problem is. Cities are where the solution is, where creativity exists to address the challenges and where they have most impact. This is why, in 2005, the C40 was founded, an organization of cities that address climate change. It started with 18 cities; now it's 91. Cities simply are the key to saving the planet.

The public is upset. If they haven't lost their job, they know somebody that has. If they haven't lost their house, they know somebody that has. What do you do? When something's wrong, it's government's job to fix it, it must be government that's responsible for causing it.

You know, Russia today is, what, 200 million people? In land mass, it's probably 50 times the size [of Japan], in natural resources a hundred times the size! Russia's not doing all that badly. The public there - not everybody - but they have things that the West offered, [that] were only available in the West a long time ago.

What the Democrats have to understand is that while we do need to reform our regulation and we do need more restrictions, it is true that it is capitalism and free enterprise and companies that create jobs and wealth for every American.