We're running the most dangerous experiment in history right now, which is to see how much carbon dioxide the atmosphere can handle before there is an environmental catastrophe.

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.

To be laughed at draws more profitable attention than being smiled at

An enlightened man had but one duty - to seek the way to himself, to reach inner certainty, to grope his way forward, no matter where it led.

When you walk into a room, a healthy, beautiful smile is incredibly important.

The snow has not yet left the earth but spring is already asking to enter your heart.

Think beyond the vase! If you have a vase of flowers on a dining table for a quick dinner party, think about scattering flower petals, leaves, or even fruit along the tabletop.

The kingdoms of Africa and Mesopotamia, machine gunning your body with depleted uranium, this is the age of microchips and titanium, the dark side of the moon, and contact with aliens.

Sin has made us stupid, so that we can only learn the hard way.

There is but one temple - the body. It is the only temple that ever existed.

Venice is all sea and sculpture.

The easily ridiculed, so-so status quo often hides Herculean efforts by those whom we take for granted, and who, working in the shadows, guarantee civilization instead of chaos.