You could not legally put a human and fly them into space. In fact, you couldn't bring a spaceship back. All those spaceships we were sending commercially into space were one way. You sort of like, got rid of them. And most passengers, who go up, do want to come back down.

Today, a group of 20 individuals empowered by the exponential growing technologies of AI and robotics and computers and networks and eventually nanotechnology can do what only nation states could have done before.

When cars have the sensory systems around them, GPS intelligence, they're looking at the world not only in visual spectrum, but infrared, ultraviolet and everything else that's going on and they've got reaction times in microseconds. Not a tenth of a second. They're a hundred thousand times faster.

Technology is a resource-liberating force!

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.

My father, who grew up picking olives on the Greek island of Lesbos, was a doctor. So my family expected me to become a physician.

I believed that once we got to the Moon, there was no stopping us. But in fact, we did stop.