Anytime you bring a really powerful new technology to market there are multiple implications. You start changing the relative position of countries.

It's not fear that keeps me up. I mean, every generation has thought, this is the worst generation; the world's going to hell in a hand basket. The reality is, people are living longer, and they're living better.

We're beginning to enter an era where it gets really cheap and really fast to begin to do things like make fuels, and make textiles, and make extra teeth for ourselves. And we're beginning to think about how we regrow our bladders.

New York City is a fascinating place because it's very good at using the energy in attracting some of the best and the brightest from everywhere.

Cities are magical things. You know the energy in them. You have to walk the streets in any borough here and you can see between what was in this city in the 1970's and where it is today and how much more energy there is and how much more just sheer.

I've always been interested in why countries appear and disappear. And the curious thing is how often it happens.

If I had a wand and could put statues in different places, one of the statues would go to a man who just died, called Norman Borlaug, who came up with the Green Revolution.