Think global, act local.

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

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.

A fire broke out backstage in a theatre. The clown came out to warn the public

It is in the perfect union of two hearts that complete and total marriage consists.

What you say about the world reflects more about you and your perception of the world than the world itself.

Water is always working, reorganizing the land.

Be ruthless about protecting writing days....althoug h writing has been my actual job for several years now, I still seem to have to fight for time in which to do it.

How is it that the Church produced no geometer in her autocratic reign of twelve hundred years?

Take away the violence and who will hear the man of peace?

it is bad manners to contradict a guest. You must never insult people in your own house - always go to theirs.

If you can’t state your position in eight words, you don’t have a position.

Every important idea in science sounds strange at first.