Super-ambitious goals tend to be unifying and energizing to people; but only if they believe there's a chance of success.

Large companies and government agencies have a lot to protect and therefore are not willing to take big risks. A large company taking a risk can threaten its stock price. A government agency taking a risk can threaten congressional investigation.

The day before something is a breakthrough, it’s a crazy idea.

I'm a nine-year old kid inside and my passion has been all my life to want to travel into space.

A Masai warrior on a cellphone in the middle of Kenya has better mobile comm than President Reagan did 25 years ago.

You've got to choose your horse ahead of time. So, if you're interested in water technology, energy technology, you get to choose between the three or four companies that you have insight into. And you have to make a bet on them before they prove anything out.

We are racing toward a world of abundance, and we are going to be increasing the quality of life for everyone on this planet. The world's biggest problems are the world's biggest business opportunities.