You are safer here tonight than you would be on the streets of any other city in the world.

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

You have to understand, we have better communications and better transportation, so people know what's available elsewhere and can get a message out, and you can move things. And you [can] say that the economy is more unpredictable.

Nobody's going to go home for a year and come back. Nobody could ever enforce that. Nobody in their right mind would ever try to do it.

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.

I make no secret of the fact that I was not a big Hillary Clinton supporter, but I thought in the two-way race between her and Donald Trump, that she should have been the president. But Trump promised a lot of things. And now he's six months in and hasn't passed a piece of legislation yet. Now, I personally have said we should help him. I didn't vote for him. I didn't think he was the right person. But once we have an election and he gets elected, then we have a responsibility as citizens to help him.

I'd be happy to provide advice if anybody asked me no matter who the President is.