The ability to write compelling emails may be the single most useful talent an organizer can possess.

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)

Without a vision, where is the focus?

Interests evolve into hobbies or volunteer work, which grow into passions. It takes time, more time than anyone imagines.

Still, whether we like it or not, the task of speeding up the decrease of the human population becomes increasingly urgent.

If however the law is so promulgated that it of necessity makes you an agent of injustices against another, then I say to you ... break the law.

Our greatest songs are still unsung.

She was a little given to rehearsing things in her mind, and having imaginary triumphs over people who had upset her in one way and another.

There's two to wash, two to dry; There's two who argue, two who cry; There's two to kiss, two to hug; and best of all, there's two to love!

There are certain times when a painting accelerates beyond you, and you have to try and understand and catch up with it.

What's the worst that can happen? A tidal wave? Glaciers with guns?

Music will never stop - it can never stop. I will continue to sing for my fans till the end of time.