You should be innovating so fast that you're invalidating your prior patents.

If you get up in the morning and think the future is going to be better, it is a bright day. Otherwise, it’s not.

It's OK to have your eggs in one basket as long as you control what happens to that basket.

The odds of me coming into the rocket business, not knowing anything about rockets, not having ever built anything, I mean, I would have to be insane if I thought the odds were in my favor.

And we need things in life that are exciting and inspiring. It can't just be about solving some awful problem. There have to be reasons to get up in the morning.

You could power the entire United States with about 150 to 200 square kilometers of solar panels, the entire United States. Take a corner of Utah... there's not much going on there, I've been there. There's not even radio stations.

In order to have your voice be heard in Washington, you have to make some little contribution.