It's not going to surprise me if our kids end up running on the beach in Florida when they're 100 years old on regrown body parts with a much higher quality of life than we can begin to imagine.

The thing that keeps me most awake is the desire and curiosity to learn more.

Ask your friends how many stars will be in the U.S. flag in 50 years? And the reason why that's a reasonable question is because there has never been a President of the United States who's been buried under the same flag he was born under.

During a period of time when Italy is talking about splitting northern and southern Italy, France is talking about splitting with Corsica and Normandy, England is talking about splitting with Wales and Scotland and England. And it goes on and on and on.

It's actually very hard to find an area of the economy that doesn't fundamentally change in the measure that we are able to read and write life code.

It's such an extraordinary time to be alive that you just don't want to miss it. I mean, it's a really neat historical period.

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.