Probably nothing that we have ever managed to do quite equals the basic undermining of the physical stability of the planet on which most of the world's poor people depend.

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)

A leader, without wisdom, is dangerous. A wise person, without leadership, is useless. But if they work together, they are unstoppable.

Do there exist many worlds, or is there but a single world? This is one of the most noble and exalted questions in the study of Nature.

My heart is a ladle of sweet water brimming over.

The greatest movement for social justice our country has ever known is the civil rights movement and it was totally rooted in a love ethic.

A lot of publishers have close relationships with people in power. So the press, which used to speak truth to power, doesn't. The big result of that has been the erosion of trust.

Look in, and see Christ's chosen saint In triumph wear his Christ-like chain; No fear lest he should swerve or faint; "His life is Christ, his death is gain.

All mirrors are magical mirrors, and we never see our faces in them.

Every time I've flown an aircraft, or visited a steelworks, or watched a panel-beater at work, I've learned something new that can be applied to buildings.

My only day off is the day I pitch.

and the rain went rollin down the windowpanes, and the shadows wiggled n' squiggled on her check and forehead like black veins.