Now, we put out a lot of carbon dioxide every year, over 26 billion tons. For each American, it’s about 20 tons. For people in poor countries, it’s less than one ton. It’s an average of about five tons for everyone on the planet. And, somehow, we have to make changes that will bring that down to zero.

Learning about climate change triggered my depression in the first place. But it was also what got me out of my depression, because there were things I could do to improve the situation. I don’t have time to be depressed anymore.

We shouldn’t be saying ‚Save the planet‘; we should be saying: ‚Save viable conditions in which people can live.‘ That’s what we’re dealing with here.

A business that makes nothing but money is a poor business.

The main message of Climate Revolution is that climate change is caused by the rotten financial system we’ve got, designed to create poverty and rip off any profits for a small amount of rich people. Meanwhile, it destroys the earth.

When the well is dry, they know the worth of water.

The symbolism of the climate strike is that if you adults don’t give a damn about my future, I won’t either.

I have seen firsthand that agricultural science has enormous potential to increase the yields of small farmers and lift them out of hunger and poverty.

Gain may be temporary and uncertain; but ever while you live, expense is constant and certain: and it is easier to build two chimneys than to keep one in fuel.

I talk to fashion designers and say I want some money to save the rainforest, and they say, ‚Oh, I agree with you completely Vivienne. Yes, climate change, it’s definitely happening,‘ but they don’t feel that they can do anything about it; they don’t even think ‚Well let’s stop it!‘

You should be attacking the carbon emissions, period, and whether it’s cap-and-trade or carbon tax or whatever, that’s the realm in which we should be playing.

War contributes greatly to global warming, which shouldn’t surprise us. All those bombs going off, all those rockets, all those planes and helicopters. All that fuel of various kinds being used. It pollutes the air and water of this very fragile and interconnected planet.

It felt like I was the only one who cared about the climate and the ecological crisis. My parents didn’t care about it, my classmates didn’t care about it, my relatives didn’t care about this. I mean nobody I knew cared about this and I felt like I was the only one.

Gujarat is the fourth state in the world where we have a separate climate-change department.

In 1961, the United States began chemical warfare in Vietnam, South Vietnam, chemical warfare to destroy crops and livestock. That went on for seven years. The level of poison – they used the most extreme carcinogen known: dioxin. And this went on for years.

You could warm Mars up, over time, with greenhouse gases.

Economy forced me to become a vegetarian, but I finally starting liking it.

We should no longer measure our wealth and success in the graph that shows economic growth, but in the curve that shows the emissions of greenhouse gases.

We should all grow our own food and do our own waste processing, we really should.

I just think people should invest in the world. Don’t invest in fashion, but invest in the world.

I have a private plane. But I fly commercial when I go to environmental conferences.

I want the politicians to prioritise the climate question, focus on the climate and treat it like a crisis.

I’ve grown accustomed to hotels and drastic climate change.

There is a sufficiency in the world for man’s need but not for man’s greed.

Two out of every five people on Earth today owe their lives to the higher crop outputs that fertilizer has made possible.

Every other civilized nation in the world has been compelled to care for its forests, and so must we if waste and destruction are not to go on to the bitter end, leaving America as barren as Palestine or Spain.

If burning fossil fuels was so bad that it threatened our very existence, how could we just continue like before? Why were there no restrictions? Why wasn’t it made illegal? To me, that did not add up.

Gardening is not a rational act.

The universal utilization of water power and its long-distance transmission will supply every household with cheap power and will dispense with the necessity of burning fuel. The struggle for existence being lessened, there should be development along ideal rather than material lines.

It’s obviously tricky to convert cellulose to a useful biofuel. I think actually the most efficient way to use cellulose is to burn it in a co-generation power plant. That will yield the most energy and that is something you can do today.

Any fool can destroy trees. They cannot run away; and if they could, they would still be destroyed – chased and hunted down as long as fun or a dollar could be got out of their bark hides, branching horns, or magnificent bole backbones.

Today, we’re very dependent on cheap energy. We just take it for granted – all the things you have in the house, the way industry works.

Economists treat economics as if it is a pure science divorced from the facts of life. The result of this false accountancy is a willful confusion under cover of which industry wreaks its havoc scot-free and ignores the environmental cost.

I personally have stopped flying. I have stopped eating meat and dairy.

There aren’t many things that are universally cool, and it’s cool not to litter. I’d never do it.

Evolution can go to hell as far as I am concerned. What a mistake we are. We have mortally wounded this sweet life-supporting planet – the only one in the whole Milky Way – with a century of transportation whoopee.

We are living in the beginning of a mass extinction and our climate is breaking down.

More businesses should be following Apple’s stance in encouraging more investment in sustainability.

Treatment without prevention is simply unsustainable.

This is the moment when we must come together to save this planet. Let us resolve that we will not leave our children a world where the oceans rise and famine spreads and terrible storms devastate our lands.

Even if the economy crashes, we will still burn oil.

The redwood is the glory of the Coast Range. It extends along the western slope, in a nearly continuous belt about ten miles wide, from beyond the Oregon boundary to the south of Santa Cruz, a distance of nearly four hundred miles, and in massive, sustained grandeur and closeness of growth surpasses all the other timber woods of the world.

What is a farm but a mute gospel?

Would you bet your paycheck on a weather forecast for tomorrow? If not, then why should this country bet billions on global warming predictions that have even less foundation?

We need to keep making our streets safer and our criminal justice system fairer – our homeland more secure, our world more peaceful and sustainable for the next generation.

There must be a reason why some people can afford to live well. They must have worked for it. I only feel angry when I see waste. When I see people throwing away things that we could use.

If anyone has a vested interest in space solar power, it would have to be me.

In most mills, only the best portions of the best trees are used, while the ruins are left on the ground to feed great fires which kill much of what is left of the less desirable timber, together with the seedlings on which the permanence of the forest depends.

The true cost to the world of a burger is far greater than the money you hand over to buy it.

People are going to buy cheap fertilizer so they can grow enough crops to feed themselves, which will be increasingly difficult with climate change.

I did this book ‚Harvest for Hope,‘ and I learned so much about food. And one thing I learned is that we have the guts not of a carnivore, but of an herbivore. Herbivore guts are very long because they have to get the last bit of nutrition out of leaves and things.

The reason we should do a carbon tax is because it’s the right thing to do. It’s economics 101, elementary stuff.

We can’t drive our SUVs and eat as much as we want and keep our homes on 72 degrees at all times… and then just expect that other countries are going to say OK. That’s not leadership. That’s not going to happen.

A life of stasis would be population control, combined with energy rationing. That is the stasis world that you live in if you stay. And even with improvements in efficiency, you’ll still have to ration energy. That, to me, doesn’t sound like a very exciting civilization for our grandchildren’s grandchildren to live in.

Climate change is a terrible problem, and it absolutely needs to be solved. It deserves to be a huge priority.

Well, capitalism is a big problem, because with capitalism you’re just going to keep buying and selling things until there’s nothing else to buy and sell, which means gobbling up the planet.

As I’m traveling around, I meet many small children. And when I look at a small and think how we’ve harmed this beautiful planet since I was that age, I feel a kind of desperation, anger, shame. I don’t know what I feel; I just don’t know what the emotion is.

We have got to change our ethics and our financial system and our whole way of understanding the world. It has to be a world in which people live rather than die; a sustainable world. It could be great.

It’s the poorer people in tropical zones who will get really hit by climate change – as well as some ecosystems, which nobody wants to see disappear.

If you don’t have sustainable energy, you have unsustainable energy. The fundamental value of a company like Tesla is the degree to which it accelerates the advent of sustainable energy faster than it would otherwise occur.

It is hard sometimes to always be at the centre of attention, but when you talk about me you also have to talk about the climate.