I think there are too many smart people pursuing internet stuff, finance, and law. That is part of the reason why we haven't seen as much innovation.

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.

WRITE YOUR BUSINESS PLAN ON A DOORMAT

It's never too late to start eating right.

Pick battles big enough to matter small enough to win.

If you think dope is for kicks and for thrills, you're out of your mind. There are more kicks to be had in a good case of paralytic polio or by living in an iron lung.

Cherish the good, learn from the bad

For men obsessed with women's underwear, a course in washing, ironing and mending is recommended.

I think that's what poetry does. It allows people to come together and identify with a common thing that is outside of themselves, but which they identify with from the interior.

You are a gut maggot with no guts.

It costs the same to send a person to prison or to Harvard. The difference is the curriculum.

Love is found in the things we've given up, more than in the things that we have kept.