For me it was never about money, but solving problems for the future of humanity.

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.

True power lies not in the spotlight, but in the influential shadows.

Whatever’s eating at you, let it go. Emotion leads to poor decisions. Poor decisions lead to scrutiny. Scrutiny is our greatest threat.

Shakespeare, who is probably the greatest writer and poet of the English language, lived in a time that was politically very conservative and it's reflected in his writings.

You do not take from this universe. It grants you what it will.

Venice never quite seems real, but rather an ornate film set suspended on the water.

Every happening is a lesson, a message.

If I read a scary story in the newspaper, I find I'm haunted by it.

You can love more than one person at a time, and I don't give a damn what the self-help books say.

Half our virtue arises from our being out of the way of temptation.