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.

Try to live without something digital - without digital code for about two hours, very hard to do if you're awake.

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.

Within the United States, there is a real division between the PhDs given in science and math to the Asian community, to the traditional white community, and then to African-Americans and Hispanics.

The definition of who's literate and who's not keeps changing. So, in Neanderthal times, if you painted on a cave wall, that was enough to transmit how you hunt, how you eat, how you cook, how you dress, and we can read about that.

When I grew up, I simply didn't have mentors that said, "Science is important. Science helps you build a country. Science makes a country powerful." And that's such a simple thought, but when you think about what's powered Taiwan and Korea and Silicon Valley and Cambridge.

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.