The Arctic and the Antarctic are melting quickly. We may have waited too long to get started. But this is a day for optimism because the battle is fully joined, and the idea that big oil is unbeatable is no longer true.

I've spent my life living in rural America, some of it in blue state Vermont, some of it in red state upstate New York. They're quite alike in many ways. And quite wonderful. It's important that even in an urbanized and suburbanized country, we continue to take rural America seriously. And the thing that makes Vermont in particular so special, and I hope this book captures some of it, is the basic underlying civility of its political life. That's rooted in the town meeting. Each of the towns in Vermont governs itself.

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

Alone among businesses, the fossil-fuel industry is allowed to dump its main waste, carbon dioxide, for free.

Without a movement pressing for change, there's little hope. We've got to work the political system to make this happen fast. The physics and chemistry are daunting. The resources on the other side are very large.

Our weird problem is an abundance of resources and a shortage of hard economic reasons not to use them.

Scientists are telling us that 350 parts per million [of carbon] in the atmosphere is the upper limit. We're at 387 parts per million now, and we're up in that zone where the risk of going past irrevocable tipping points is elevated. It's no different than going to a doctor and learning your cholesterol is too high, and you're at risk for a heart attack. You have to work to lower your cholesterol and hope to get there before the heart attack comes.