The world's biggest problems are the world's biggest business opportunities.

We live in a world bathed in 5,000 times more energy than we consume as a species in the year, in the form of solar energy.

Stuff goes wrong. Expect it, learn from it, fix it. That's how remarkable happens.

The question companies have to ask, or governments have to ask is, where do we allow crazy ideas to bubble up? Because if there is a failure, what happens? Someone gets blame. There's a lawsuit, there's a congressional investigation. And so, those things shut down the creative engine.

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!

We are not going to stop here on planet Earth. We're going to move out to other planetary bodies.

Eight billion people will have Internet access by 2020.