There are some important differences between me and Tony Stark, like I have five kids, so I spend more time going to Disneyland than parties.

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.

If I can see pain in your eyes then share with me your tears. If I can see joy in your eyes then share with me your smile.

If you wouldn’t want to hang out with someone who was constantly bashing you with a barrage of belittling insults, why would you allow them to live in your head?

Her immediate impulse was one of self-preservation. She was tied up in this somehow, she didn’t know why or how, but there was something waiting for her on the other side of this crowd.

Fools rush in through the door; for folly is always bold.

Once you have a genuine sense of concern for others, there’s no room for cheating, bullying or exploitation.

Clock measurement is not time itself. In fact, so opposed are they that one could argue the clock is not a synonym, but the opposite of time.

We only hear what we listen for.

Where there is much desire to learn, there of necessity will be much arguing, much writing, for opinion in good men is but knowledge in the making.

I think if you're feeling great about where you are, everything that led up to it had to be terrific.

It is the human things that make life good, the unexpected kindness, the friendly note, the bracing word, the neighbour's extra loaf of bread she leaves at our back door.