We cannot ask others to do what we have not done ourselves.

Quite frankly, there is no answer to climate change without substantially, dramatically, increasing the amount of renewable energy in the global energy system.

We will move to a low-carbon world because nature will force us, or because policy will guide us. If we wait until nature forces us, the cost will be astronomical.

This is probably the most difficult task we have ever given ourselves, which is to intentionally transform the economic development model, for the first time in human history.

I still do not understand why we don't have people on the streets every single day raising their voices for climate.

We have to get to the point where each individual, each corporation, each community chooses low carbon, because it makes fundamental sense. It should become a no-brainer.

DEMAND, PURCHASE & USE LOW CARBON PRODUCTS AND SERVICES. MAKE LOW CARBON SEXY!

When you have a vision of where you need to go, it sounds utopian. But when you get to the tipping point, your understanding switches.

We shouldn't have stupid cars that use liquid fossil fuels. Come on, how outmoded is that? We have to get to the point where this is no longer a part of our experience.

We are just about to cross the 400 parts per million threshold.

Think global, act local.

Pure heart, pure soul.

The habits of a vigorous mind are born in contending with difficulties.

Early is a priceless timepiece owned by the successful.

It is not important how successful you are, the only thing that matters is how good a person you are...

To depart from righteousness is to choose a life of crushing burdens, failures, and disappointments, a life caught in the toils of endless problems that are never resolved.

Adjectives are the sugar of literature and adverbs the salt.

Because we are a conglomerate of our experiences - you take away any experience and you take away a piece of identity. You take away a piece of identity and we don't really know who we are.

Pleasure is sweetest when 'tis paid for by another's pain.

I've always shot on film, but the times are changing.

You know that only thing that has made the whole thing worthwhile has been those few times that I was able to truly connect with another person.