I always see what’s... wrong. Would you want that? When I see a car or a rocket or spacecraft, I only see what’s wrong. I never see what’s right. It’s not a recipe for happiness.

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.

There is something about veganism that is not easy, but the difficulty is not inherent in veganism, but in our culture.

Why do all great men, live not long enough, to see their greatness?

Plato worries our thinking might become too reflexive and comfortable with itself.

You had better live your best and act your best and think your best today for today is the sure preparation for tomorrow and all the other tomorrows that follow.

I had arrived at the airport one hour early so that, in accordance with airline procedures, I could stand around.

I hate putting up taxes.

A stylist might say you look amazing in anything. Your family will always tell you if you look a complete idiot.

The aim of music is not to express feelings but to express music.

The more for whom we strive to serve, the greater effectiveness we will have.

The assumption that anything true is knowable is the grandfather of paradoxes.