Just in terms of allocation of time resources, religion is not very efficient. There's a lot more I could be doing on a Sunday morning.

The internet is just a passing fad.

Married life is a simpler life. Who I spend my time with is established in advance.

50 years from now we won't need as much human labour to do what manual workers do, so we should be able to take that extra productivity and put it to better use.

Energy is very primal stuff and there are a lot of leads that are promising, still at a fairly risky stage, but over the next decade some of these breakthrough approaches are going to pay out, and U.S. research and U.S. leadership on this should be part of how it gets solved.

We need to start thinking about the future of food if we are going to feed 9 billion people in a way that does not destroy our environment.

People in business understand paying money to be more efficient. You can bootstrap markets where the devices are too expensive at first because these are so valuable to some people.