Until recently, over 98 percent of teachers just got one word of feedback: Satisfactory. If all my bridge coach ever told me was that I was 'satisfactory,' I would have no hope of ever getting better.

We [US] are the biggest per person, by a substantial amount, greenhouse emitters, and we give the most foreign aid, not per person but in absolute. This is another issue where hopefully we will take a long-term approach which, even though we sometimes have a hard time doing that, it's easier for us, as a rich country with this kind of scientific depth, than it is for the poor countries who will suffer the problems.

If you give people tools, and they use their natural abilities and their curiosity, they will develop things in ways that will surprise you very much beyond what you might have expected.

The vision is that people should have the ultimate in convenience. Being able to get the things they care about on the appropriate device.

By improving health, empowering women, population growth comes down.

In order for the United States to do the right things for the long term, it appears to be helpful for us to have the prospect of humiliation. Sputnik helped us fund good science - really good science: the semiconductor came out of it.

If I had a dollar for every time someone made fun of me in high school-oh wait, I do!