Many have built their careers buttressing the status quo, reinforcing what theyve already accomplished, and resisting the radical thinking that can topple their legacy - not exactly the attitude you want when trying to drive innovation forward.

You have to ask yourself the question, do you have the smartest people in the world working for your company? And if you do, you're lucky. But if you don't, put up the incentive. And have someone who is absolutely brilliant who's a 22-year old in India who says what about this way? And who revolutionizes the way you do business.

My childhood dreams were focused on being part of the effort to make humanity a multiplanetary species.

The folks who go after grand challenges are impatient. They're pissed off. They're sick and tired, but in a passionate way. They're driven by a fire in their bellies to make a difference.

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

Go and try to start your own government in the United States today and you'll be squashed very quickly.

Imagine a world of nine billion people with clean water, nutritious food, affordable housing, personalized education, top-tier medical care, and nonpolluting, ubiquitous energy. Building this better world is humanity's grandest challenge.