Want to know the best thing about being a professor? Colored chalk.

In a wristwatch, imagine the battery is in the strap and there's a medical sensor in there connected to the internet. If someone is monitoring that, they could phone up if the user has forgotten to take some medication. This could save hundreds of dollars in medical fees later. What's missing? It's a stable battery.

In a battery, I strive to maximize electrical potential. When mentoring, I strive to maximize human potential.

I do change the odd lightbulb, and I fix the Internet when it goes down, because it's something I am really good at.

There's no better place in the world for technology start-ups than Silicon Valley; there's such an incredible well of talent and capital and resources. The whole system is set up to foster the creation of new companies.

Technology is not going to be perceived by different classes of people in the same way.

I was always kind of against streaming, but I've been traveling so much, and I usually carry a huge hard drive of digital music with me, but I haven't had time to deal with it, so I've been doing streaming. And I had this incredible breakthrough of weightlessness where I've really been loving streaming music.