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

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

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.

Treatment without prevention is simply unsustainable.

If future generations are to remember us more with gratitude than sorrow, we must achieve more than just the miracles of technology. We must also leave them a glimpse of the world as it was created, not just as it looked when we got through with it.

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.

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.

Without electricity, the air would rot.

Nothing is being done to stop the climate and ecological emergency from happening and to secure the future wellbeing for future generations.

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

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

I think California has the best energy.

We’ve gotta become the Martians. I’m a Martian – I tell you to become Martians. And we’ve gotta go to Mars and civilize Mars and build a whole civilization on Mars and then move out, 300 years from now into the universe. And when we do that, we have a chance of living forever.

Thanks to my mother, not a single cardboard box has found its way back into society. We receive gifts in boxes from stores that went out of business twenty years ago.

I’ve actually made a prediction that within 30 years a majority of new cars made in the United States will be electric. And I don’t mean hybrid, I mean fully electric.

To shake your rump is to be environmentally aware.

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

Every once in a while, I get mad. ‚The Lorax‘ came out of my being angry. The ecology books I’d read were dull… In ‚The Lorax,‘ I was out to attack what I think are evil things and let the chips fall where they might.

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.

I was born in London in England in 1934. I went through, as a child, the horrors of World War II, through a time when food was rationed and we learned to be very careful, and we never had more to eat than what we needed to eat. There was no waste. Everything was used.

If a man walks in the woods for love of them half of each day, he is in danger of being regarded as a loafer. But if he spends his days as a speculator, shearing off those woods and making the earth bald before her time, he is deemed an industrious and enterprising citizen.

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.

The main message we want to get out there is that climate change is caused by the rotten economic system.

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

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.

The nuclear approach I’m involved in is called a traveling-wave reactor, which uses waste uranium for fuel. There’s a lot of things that have to go right for that dream to come true – many decades of building demo plants, proving the economics are right. But if it does, you could have cheaper energy with no CO2 emissions.

If you think in terms of a year, plant a seed; if in terms of ten years, plant trees; if in terms of 100 years, teach the people.

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

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.

I threw my cup away when I saw a child drinking from his hands at the trough.

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.

We are at a time in history where everyone with any insight of the climate crisis that threatens our civilisation – and the entire biosphere – must speak out in clear language, no matter how uncomfortable and unprofitable that may be.

The situation the Earth is in today has been created by unmindful production and unmindful consumption. We consume to forget our worries and our anxieties. Tranquilising ourselves with over-consumption is not the way.

The reality is gas prices should be much more expensive then they are because we’re not incorporating the true damage to the environment and the hidden costs of mining oil and transporting it to the U.S. Whenever you have an unpriced externality, you have a bit of a market failure, to the degree that eternality remains unpriced.

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 really do encourage other manufacturers to bring electric cars to market. It’s a good thing, and they need to bring it to market and keep iterating and improving and make better and better electric cars, and that’s what going to result in humanity achieving a sustainable transport future. I wish it was growing faster than it is.

As soon as a redwood is cut down or burned, it sends up a crowd of eager, hopeful shoots, which, if allowed to grow, would in a few decades attain a height of a hundred feet, and the strongest of them would finally become giants as great as the original tree.

We could have saved the Earth but we were too damned cheap.

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

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

I have a company, and I’ve got to think about that. I’m trying to do my best there, and that’s a much harder task. We recycle as much as possible, and we conserve. But I’ve always been one to save everything – I even walk up stairs on the very inside or the very outside to not wear out the tread.

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

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.

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

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

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.

Can you imagine what a different world we will live in when businesses do what’s right for the communities and the environment in everything they do?

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.

We can’t just continue living as if there was no tomorrow, because there is a tomorrow.

An important priority for me is a business must get their own house in order. Be or become an agent of positive change in your own enterprise and adopt responsible practices to eliminate the risks that often lie at the root of inequality and poverty.

I’ve been very passionate about renewable energy for many years, particularly solar energy and its capacity to bring abundant clean, sustainable energy to millions around the globe.

What is a farm but a mute gospel?

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

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.

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

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

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.

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

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

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.

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.