We've been given a warning by science, and a wake-up call by nature; it is up to us now to heed them.

Climate change is the single biggest thing that humans have ever done on this planet. The one thing that needs to be bigger is our movement to stop it.

The technology we need most badly is the technology of community, the knowledge about how to cooperate to get things done.

Very few people on earth ever get to say: 'I am doing, right now, the most important thing I could possibly be doing.' If you'll join this fight that's what you'll get to say

what you do every day is what forms your mind and precious few of us can or would spend most days outdoors.

In 50 years, no one will care about the fiscal cliff or the Euro crisis. They'll just ask, "So the Arctic melted, and then what did you do?"

Global warming is no longer a philosophical threat, no longer a future threat, no longer a threat at all. It's our reality.

Advent: the time to listen for footsteps - you can't hear footsteps when you're running yourself.

The real negotiation is between humans on the one hand and chemistry and physics on the other. And chemistry and physics, unfortunately, don't bargain.

We can either save the planet from catastrophic warming, or protect fossil fuel CEOs. Not both. Do the math(s)

There is no ideal Christmas; only the one Christmas you decide to make as a reflection of your values, desires, affections, traditions.

At the W.M. Keck Observatory on the very high altitude summit of Mauna Kea, there was no routine monitoring of mental functioning, blood oxygen levels, blood pressure or heart rate of workers.

Opportunity always knocks

... perhaps the clock hands had become so tired of going in the same direction year after year that they had suddenly begun to go the opposite way instead...

Film gives us the luxury of deciding where the viewpoint of the audience is, and by knowing that, we can very effectively design around what is actually seen on camera.

Anything less would not have been worthy of me. Anything more would not have been possible.

If you're a racist, right now, in 2011... You just look like a retard, man.

Captures the reader with true magic.

My method is simple: not to bother about poetry. It must come of its own accord. Merely whispering its name drives it away.

If I were worried about my reputation, I wouldn't do anything with start-ups

And I sit here without identity: faceless. My head aches.