In 1980, during my sophomore year at MIT, I realized that the school didn't have a student space organization. I made posters for a group I called Students for the Exploration and Development of Space and put them up all over campus. Thirty-five people showed up. It was the first thing I ever organized, and it took off!

Eight billion people will have Internet access by 2020.

An expert is someone who can tell you exactly how it can't be done.

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

The price to generate a megawatt or a gigawatt of energy is coming down year after year. We're learning how to print it, make it more efficient.

You need to be a little crazy to change the world, and you can’t really fake it.

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.