That way you can be certain to learn something you didn't know previously.

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

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.

Our leadership [in Microsoft ] has that - "hey, we are the best in certain ways," and so we get the best people. That any kind of positive dynamic is quite good, so I love what's going on there, it's fun.

Being flooded with information doesn't mean we have the right information or that we're in touch with the right people.

The Ebola epidemic can serve as an early warning wake-up call to get ready. If we start now, we can be ready for the next epidemic.

I have not met [Donald] Trump and discussed any issues with him. There have been Republican administrations like the [George] Bush administration who initiated this AIDS generosity. So it's not purely a right-left thing.