If I collected all the diamonds in the world, I'd have no 'income' but I'd have a lot of 'assets'. Would my company be worth nothing because I have no income? A lot of Net companies are collecting assets. They have to be measured with a new set of metrics.

I do not know what got me interested in technology. What was very clear to me very early on was that I was not interested in religion and that naturally increased my curiosity about science and technology, and I fundamentally believe the two are conflicting.

Every big problem is a big opportunity.

If everyone played it safe, we wouldn't get anywhere.

Is it 10 years, 20, 50 before we reach that tipping point where climate change becomes irreversible? Nobody can know. There's clearly a probability distribution. We need to ensure this planet, and we need to do it quickly.

The world is hung up on food-based biofuels. Not only are they the wrong thing, they're the uneconomic thing.

The right way to build a company is to experiment in lots of small ways, so that you have plenty of room to make mistakes and change strategies.