People often overestimate what will happen in the next two years and underestimate what will happen in ten.

Intermittency [in availability for wind and solar] changes the economics, particularly this requirement that the power company at all times be able to require power. That's large.

I meet people overseas that know five languages - that the only language I'm comfortable in is English.

I believe innovation is the most powerful force for change in the world. People who are pessimistic about the future tend to extrapolate from the present in a straight line. But innovation fundamentally shifts the trajectory of development.

Know your numbers' is a fundamental precept of business.

Whenever you have war, you often have more deaths because the medical system and the food system breaks down, than you have directly through violence.

Measuring programming progress by lines of code is like measuring aircraft building progress by weight.