First we need to decide what needs to be done. Then we do it. And then we ask if it is possible.

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

We have built a greenhouse, a human greenhouse, where once there bloomed a sweet and wild garden.

It seems that every time mankind is given a lot of energy, we go out and wreck something with it.

The first rule of sustainability is to align with natural forces, or at least not try to defy them

No civilization has survived the ongoing destruction of its natural support systems. Nor will ours.

The first rule of sustainability is to align with natural forces, or at least not try to defy them.

If you are energy-efficient and water-wise at home, then take all your good habits abroad with you.

My house is covered in solar panels, I'm a great believer in all this - we all should be doing this.

We advocate biodiversity for biodiversity's sake. It may take our extinction to set things straight.

...deficit consumption is, in effect, drawing down on the capital entitlements of future generations

Those who die for their country are martyrs and those who live for their country are greater martyrs.

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

There is a tendency at every important but difficult crossroad to pretend that it's not really there.

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

For as long as we're using fossil fuels at all, globally, Canadians should be using Canadian sources.

Here, there's more of a movement, it doesn't mean we're winning any more, but we're at least fighting.

Oil companies are radical because they're willing to alter the chemical composition of the atmosphere.

I think that so far the political and economic power of the fossil fuel industry has trumped all else.

I know all of the antiques stores in Buenos Aires. I've been in every one of them, picking things out.

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

A price on carbon sufficient to keep 80% of current reserves underground, rebated directly to citizens.

Capitalism, as practiced, is a financially profitable, non-sustainable aberration in human development.

Look - every time is the wrong time and the perfect time to have a kid, and you just do it when you can.

... do something. Pay your rent for the privilege of living on this beautiful, blue-green, living Earth.

At present we are stealing the future, selling it in the present, and calling it gross domestic product.

Truth and beauty can still win battles. We need more art, more passion, more wit in defense of the Earth.

If something's going wrong with this planet we'd better fix it here and not look for some sort of escape.

Colonialism of one kind or another, imperialism of one kind or another, and slavery, and on and on and on.

When we think about global warming at all, the arguments tend to be ideological, theological and economic.

We must begin thinking like a river if we are to leave a legacy of beauty and life for future generations.

Doing the eco-accessory thing doesn't have to mean giving up designer labels. In fact, quite the opposite.

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

Even if you build the perfect reactor, you're still saddled with a people problem and an equipment problem.

The thing about global warming is that you can address it on a great number of levels - in fact you have to.

These parks are our life's work, not the clothing chains we created, selling people clothes they don't need.

Population growth is exceeding farmers' ability to keep up...Our oldest enemy, hunger, is again at the door.

Little children love bright, shiny things - and in my experience, most grown-up women aren't very different!

What makes us different? We're the creature that can decide not to do something that we are capable of doing.

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

We must all work together in order to save the environment and the world that we live in from further change.

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

Profiting from companies that are overloading the atmosphere with carbon and changing the atmosphere is wrong.

A voluntary simplification of life-styles is not beyond our abilities, but it is probably outside our desires.

We had other currencies that we could find work in - the currencies of movements: passion, spirit, creativity.

We oppose any pipeline whose sole purpose is to export bitumen from Canada to make profits in other countries.

I think we will work our way towards a position that says that having more than two children is irresponsible.

We are speeding up our lives and working harder in a futile attempt to buy the time to slow down and enjoy it.

People have alleged that I have inspired many young people over the years, but I say, it was just the opposite.

I don't think that, you know, adherence to ignorance is really something that encourages voters to support you.

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