The climate crisis is both the easiest and the hardest issue we have ever faced. The easiest because we know what we must do. We must stop the emissions of greenhouse gases. The hardest because our current economics are still totally dependent on burning fossil fuels, and thereby destroying ecosystems in order to create everlasting economic growth.

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.

I'm telling you there is hope. I have seen it, but it does not come from the governments or corporations. It comes from the people.

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

Once we start to act, hope is everywhere. So instead of looking for hope, look for action. Then, and only then, hope will come.

We all have a choice. We can create transformational action that will safeguard the living conditions for future generations. Or we can continue with our business as usual and fail.

I thought I couldn't make a difference because I was too small.

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

We can no longer save the world by playing by the rules.

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.

We should not underestimate ourselves, because if lots of individuals go together then we can accomplish almost anything.

To do your best is no longer good enough. We now have to do the seemingly impossible.

The real danger is not inaction. The real danger is when politicians and CEOs are making it look like action is happening when in fact nothing is being done.

Why should I be studying for a future that soon may not exist?

Before I started school striking I had no energy, no friends and I didn't speak to anyone. I just sat alone at home, with an eating disorder. All of that is gone now, since I have found a meaning, in a world that sometimes seems shallow and meaningless to so many people.

I remember when I was younger, and in school, our teachers showed us films of plastic in the ocean, starving polar bears and so on. I cried through all the movies. My classmates were concerned when they watched the film, but when it stopped, they started thinking about other things. I couldn't do that. Those pictures were stuck in my head.

Social media can be very effective in creating movements. In the beginning, that is how I first got attention.

I don't care about hate and threats from climate crisis deniers. I just ignore them.

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.

For 25 years countless people have come to the U.N. climate conferences begging our world leaders to stop emissions and clearly that has not worked as emissions are continuing to rise. So I will not beg the world leaders to care for our future. I will instead let them know change is coming whether they like it or not.

I am an introvert; privately I am very shy, and I don't speak unless I have to.

I want you to panic. I want you to feel the fear I feel every day. And then I want you to act.

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.

At first when I heard about climate change, I was a climate denier. I didn't think it was happening. Because if there really was an existential crisis like that, that would threaten our civilisation, we wouldn't be focusing on anything else. That would be our first priority. So I didn't understand how that added up.

I don't care about age. Nor do I care about those who do not accept the science. I don't have as much experience, and therefore I listen more. But I also have the right to express my opinion, no matter my age.

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.

You can rebel in different ways. Civil disobedience is rebelling. As long as it's peaceful, of course.

The most common criticism I get is that I'm being manipulated and you shouldn't use children in political ways, because that is abuse, and I can't think for myself and so on. And I think that is so annoying! I'm also allowed to have a say - why shouldn't I be able to form my own opinion and try to change people's minds?

I just want to be just as everyone else. I want to educate myself and be just like a normal teenager.

Of course, individual change doesn't make much difference in a holistic picture... but we need both systemic change and individual change.

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

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.

Many people listen to what I have to say and I appear a lot in media, so therefore I influence a lot of people and therefore I have a bigger responsibility because I have a bigger platform.

Solving the climate crisis is the greatest and most complex challenge that homo sapiens have ever faced. The main solution, however, is so simple that even a small child can understand it. We have to stop our emissions of greenhouse gases.

I have Asperger's, I'm on the autism spectrum, so I don't really care about social codes. It makes you think differently.

We can't just choose to tell some facts and not others because we don't want to upset people. We have to tell it like it is.

Many people seem to have this double moral. They say one thing and then do another thing. They say that the climate crisis is very important and yet they do nothing about it.

We have to understand what the older generation has dealt to us, what mess they have created that we have to clean up and live with.

I like school and I like learning.

For way too long the politicians and people in power have got away with not doing anything at all to fight the climate crisis and ecological crisis.

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.

I don't use any animal products, both because of ethical and environmental and climate reasons.

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

Giving up cannot be an option.

I have always been that girl in the back who doesn't say anything.

Some people can just let things go, but I can't, especially if there's something that worries me or makes me sad.

Sometimes it's Tune-berg, sometimes Thunn-berg. I mean, I think it's funny that everyone pronounces it differently. So, that is just - I don't mind anyone pronouncing it wrong. There's no wrong way to pronounce it. Everyone pronounces it in their own way.

When I'm really interested in something, I get superfocused on that. And I can spend hours upon hours not getting tired of reading about it and still be interested to learn more about it.

I'm on the autism spectrum. I don't usually follow social coding and so therefore I go my own way.

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.