You don't choose your passions; your passions choose you.

We're working to lower the cost of spaceflight so that many people can afford to go and so that we humans can better continue exploring the solar system. Accomplishing this mission will take time, and we're working on it methodically.

If you look at academic studies, you can see that stock prices are most closely correlated with cash flow. It's such a straightforward number. Cash flow is what will drive shareholder returns.

I think technology advanced faster than anticipated. In that whirlwind, a lot of companies didn't survive. The reason we have done well is because, even in that whirlwind, we kept heads-down focused on the customers. All the metrics that we can track about customers have improved every year.

If you make customers unhappy in the physical world, they might each tell 6 friends. If you make customers unhappy on the Internet, they can each tell 6,000 friends.

If you double the number of experiments you do per year you're going to double your inventiveness.

Millions of people were inspired by the Apollo Program. I was five years old when I watched Apollo 11 unfold on television, and without any doubt it was a big contributor to my passions for science, engineering, and exploration.