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.

You can go overboard in how quickly you might expect new technologies to transform people's lives. But I very much believe the way software is used, the way information gets distributed, will be dramatically different within 10 years. There is fire to go with all this smoke.

Going out in the field, it's always enlightening to see what's working and what's not and to sit down and talk - I was with young girls in south Africa - understanding why our tools for prevention aren't being adopted, and what way may need to invent to help protect them.

Five years from now on the Web for free you’ll be able to find the best lectures in the world. It will be better than any single university.

Most of our competitors were one-product wonders... They would do their one product, but never get their engineering sorted out.

Certain teams are more careful in what they write. They generate less bugs. You can know that but it still doesn't mean there might be there might not be one bug that would be bad to ship the product with.

I can understand wanting to have a million dollars but once you get beyond that, I have to tell you, it's the same hamburger.