There are so many symptoms of this disease it's hard to know where to start to catalogue them, but just look at the effects on hydrology - on the way water moves around the planet.

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.

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

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)

Books may look like nothing more than words on a page, but they are actually an infinitely complex imaginotransference technology that translates odd, inky squiggles into pictures inside your head.

God is up to something, but you will never know unless you figure out the difference between who is the messenger carrying your future and who is the person holding you back.

For your love I have uprooted all my desires, I am no more demanding...

Not that it was beautiful, but that, in the end, there was a certain sense of order there; something worth learning in that narrow diary of my mind

Today we are confronted with reality on the vastest scale mankind has known and this puts a greater responsibility on the photographer.

I've been working on my finishing for quite some time. It's just a question of paying attention to the minor details.

I've only been interested in the artistic side of life.

Ask for help. Not because you are weak. But because you want to remain strong.

People of character don’t allow the environment to dictate their style.

If politics is like show business, then the idea is not to pursue excellence, clarity or honesty but to appear as if you are, which is another matter altogether.