I don't create companies for the sake of creating companies, but to get things done.

Failure is an option here. If things are not failing, you are not innovating enough.

When something is important enough, you do it even if the odds are not in your favor.

People should pursue what they're passionate about. That will make them happier than pretty much anything else.

I think it is possible for ordinary people to choose to be extraordinary.

I'm extremely confident that solar will be at least a plurality of power, and most likely a majority... in less than 20 years.

Constantly seek criticism. A well thought out critique of what you're doing is as valuable as gold

Optimism, pessimism, f**k that; we're going to make it happen. As God is my bloody witness, I'm hell-bent on making it work.

I think that's the single best piece of advice: constantly think about how you could be doing things better and questioning yourself.

Mars is the only place in the solar system where it's possible for life to become multi-planetarian.

My mentality is that of a samurai. I would rather commit seppuku than fail.

I am dreaming of leaders who lead by serving.

I haven't always been a patient man...but something tells me you'd be worth the wait.

How do you judge the brightness of a light when you’re the source? A spotlight can never see the shadows it casts.

But, truly, I have wept too much! The Dawns are heartbreaking. Every moon is atrocious and every sun bitter.

In this business actors who have Botox or surgery make you very aware of age. It's awful.

The beginning don't matter. The end don't matter. All that matters is what you do in between...the greatest reward is to know that you did your job when you were here on the planet.

Sometimes you have to say, "No. This is my space." If you're going to come at me, come at me respectfully, and I will respond respectfully.

I don't mind getting punched in the nose by a guy standing in front of me. It's getting stabbed in the back that I can't handle.

The problem is that nowadays, with so much information flying around, it is almost impossible to remember anything you saw just a week ago, never mind three years ago!

I think all the beer I drank in college created an iron bladder.