The threat to the planet is us. It’s actually not a threat to the planet – it’s a threat to us.

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

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

The environmentalists say capitalism is killing our oceans, air, land, and forests. Capitalists argue that they provide food, fuel, and building materials for a growing world.

While we ourselves are the living graves of murdered animals, how can we expect any ideal living conditions on this earth?

We need enlightenment, not just individually but collectively, to save the planet. We need to awaken ourselves. We need to practice mindfulness if we want to have a future, if we want to save ourselves and the planet.

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

By stopping flying, you don’t only reduce your own carbon footprint but also that sends a signal to other people around you that the climate crisis is a real thing and that helps push a political movement.

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

You’re never going to get the amount of CO2 emitted to go down unless you deal with the one magic metric, which is CO2 per kilowatt-hour.

It’s not as though we can keep burning coal in our power plants. Coal is a finite resource, too. We must find alternatives, and it’s a better idea to find alternatives sooner then wait until we run out of coal, and in the meantime, put God knows how many trillions of tons of CO2 that used to be buried underground into the atmosphere.

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

We should remember that there are nations which meet more than 30 to 60% of their power requirements through the nuclear power system.

Without electricity, the air would rot.

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.

When we build, let us think that we build for ever.

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.

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.

We cannot command Nature except by obeying her.

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

A company shouldn’t get addicted to being shiny, because shiny doesn’t last.

What is the use of a house if you haven’t got a tolerable planet to put it on?

When I was a little girl you used to learn to sew all the holes in things, darning socks, but nobody mends things anymore.

In the case of the environment, there’s no one to bail it out.

We must get rid of fossil fuels by developing injection systems for automobiles, which can run on bio-fuel.

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

There’s 20 companies that I have investments in – some batteries, some solar-thermal, one big nuclear thing. We need hundreds and hundreds of companies like that, so that in a 20-year time frame we really are starting to change the energy infrastructure.

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

The shift to a cleaner energy economy wont happen overnight, and it will require tough choices along the way. But the debate is settled. Climate change is a fact.

We will have to leave this planet, and we’re going to leave it, and it’s going to make this planet better.

People tell me that they are so hopeful when they see me and other children ‚school-striking,‘ and they say, ‚Oh the children are going to save us.‘ But no, we aren’t. We are too young to be able to do that. We don’t have time to wait for us to grow up and fix this in the future.

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.

Most emissions aren’t caused by individuals, they’re caused by corporations and states.

The effects of climate change are real and must be acted on.

I’m not saying that people should stop flying. I’m just saying it needs to be easier to be climate neutral.

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

We’re in very bad trouble if we don’t understand the planet we’re trying to save.

Here at this site, Solyndra expects to make enough solar panels each year to generate 500 megawatts of electricity. And over the lifetime of this expanded facility, that could be like replacing as many as eight coal-fired power plants.

People are unaware of what is going on. When I talk to people, they know the basics, they know the planet is warming because of greenhouse gases… but they don’t know the actual consequence of that.

The Apollo program certainly had no real commercial value. It was done for very different reasons and, I think, very good reasons for the time. It’s an extraordinary achievement of mankind, but it wasn’t sustainable.

I mean, people aren’t continuing like this and not doing anything because they are evil, or because they don’t want to. We aren’t destroying the biosphere because we are selfish. We are doing it simply because we are unaware.

I’m glad to see that BMW is bringing an electric car to market. That’s cool.

Taking bold action on climate change simply makes good business sense. It’s also the right thing to do for people and the planet. Setting a net-zero GHG emissions target by 2050 will drive innovation, grow jobs, build prosperity, and secure a better world for what will soon be 9 billion people.

Take a course in good water and air; and in the eternal youth of Nature you may renew your own. Go quietly, alone; no harm will befall you.

There are thousands of ways to take action. For example, plant trees, pick up litter, join an organisation or movement that makes a difference and especially try to influence adults and put pressure on people in power.

I resigned from the Marine Corps and flying in 1974, even though I loved them both. I quit because I no longer wanted to fight for peace. Instead, I believe we can build a more sustainable peace by working for prosperity.

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.

The thing that’s made me open my eyes to what was happening to the environment and climate was films and documentaries.

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

Gardening is not a rational act.

It is good to realize that if love and peace can prevail on earth, and if we can teach our children to honor nature’s gifts, the joys and beauties of the outdoors will be here forever.

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.

By the time we see that climate change is really bad, your ability to fix it is extremely limited… The carbon gets up there, but the heating effect is delayed. And then the effect of that heat on the species and ecosystem is delayed. That means that even when you turn virtuous, things are actually going to get worse for quite a while.

At places like Davos, people like to tell success stories. But their financial success has come with an unthinkable price tag. And on climate change, we have to acknowledge we have failed.

Many people, especially in the U.S., see countries like Sweden or Norway or Finland as role models – we have such a clean energy sector, and so on. That may be true, but we are not role models.

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.

I really wonder what gives us the right to wreck this poor planet of ours.

We’ve got to keep our eye on what’s happening with Russia and North Korea. We cannot lose sight of domestic policy, either. Healthcare. Immigration. Climate change.

I have been on the road and visited numerous places and met people from all over the globe. I can say that it looks nearly the same everywhere I have been: The climate crisis is ignored by people in charge, despite the science being crystal clear.

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

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