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.

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

Some people don't like change, but you need to embrace change if the alternative is disaster.

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

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

I could either watch it happen or be a part of it.

Life is too short for long-term grudges.

Most people can learn a lot more than they think they can. They sell themselves short without trying.

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

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

You shouldn't do things differently just because they're different. They need to be... better.

For my part, I will never give up, and I mean never.

Patience is a virtue, and I'm learning patience. It's a tough lesson.

As a child I would just question things.

Humans need to be a multiplanet species.

The key test for an acronym is to ask whether it helps or hurts communication.

I do love email. Wherever possible I try to communicate asynchronously. I'm really good at email.

The extension of life beyond Earth is the most important thing we can do as a species.

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