Software was the key element that would determine how useable and how broadly applicable the machine was.

I'm quite worried about the fiscal imbalances that we've got and what that might mean in terms of financial crisis ahead.

Americans want students to get the best education possible. We want schools to prepare children to become good citizens and members of a prosperous American economy.

The phenomenal generosity of the United States in its aid budget towards health issues is the best in the world. You can look at that broadly, you can look at it in terms of HIV, the PEPFAR money which came together in a Republican administration with bipartisan support.

The trick generally is to break programs into pieces and have those pieces be individually testable and so then when you move on to the other pieces you treat it as a black box knowing that it either works or doesn't work.

Teaching's hard! You need different skills: positive reinforcement, keeping students from getting bored, commanding their attention in a certain way.

The US really has to get out in front. We are the biggest per person, by a substantial amount, greenhouse emitters, and we give the most foreign aid, not per person but in absolute.