Persistence is very important. You should not give up unless you are forced to give up.

I think the high-tech industry is used to developing new things very quickly. It's the Silicon Valley way of doing business: You either move very quickly and you work hard to improve your product technology, or you get destroyed by some other company.

I'd like to dial it back 5% or 10% and try to have a vacation that's not just e-mail with a view.

Fear is a hard thing to deal with. I feel it quite strongly. If I think something is important enough, I'll make myself do it in spite of fear. But it can really sap the will. I hate fear, I wish I had it less.

I think it is possible for ordinary people to choose to be extraordinary.

I'm extremely confident that solar will be at least a plurality of power, and most likely a majority... in less than 20 years.

The primary means of energy generation is going to solar. It will at least be a plurality, and probably be a slight majority in the long term.