In American math classes, we teach a lot of concepts poorly over many years. In the Asian systems they teach you very few concepts very well over a few years.

That's the part where the governments have a unique role, and then when it progresses well enough, then existing companies or new startup companies should take it. In the $3 trillion a year energy market, the rewards will be quite fantastic.

Philanthropy should be voluntary.

With tech companies, whoever's the leader is always questioned, you know. They say, 'Is this the end of them?' And - there's more - more times people think that's the case than it really is the case.

There's no magic line between an application and an operating system that some bureaucrat in Washington should draw.

Being maniacal about something is very helpful.

You have to be willing to see that sometimes the governments of these poor countries don't come through. You have to think about that as a constraint. How do you help them be better? How do you come up with things that actually work, even in those tough situations.