Delhi is locked in a complete choking smog at the moment - they've had to close schools in one of the world's biggest cities. They have their own reasons for needing to get off fossil fuels fast.

Climate change is the single biggest thing that humans have ever done on this planet. The one thing that needs to be bigger is our movement to stop it.

The technology we need most badly is the technology of community, the knowledge about how to cooperate to get things done.

Very few people on earth ever get to say: 'I am doing, right now, the most important thing I could possibly be doing.' If you'll join this fight that's what you'll get to say

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

In 50 years, no one will care about the fiscal cliff or the Euro crisis. They'll just ask, "So the Arctic melted, and then what did you do?"

Global warming is no longer a philosophical threat, no longer a future threat, no longer a threat at all. It's our reality.

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

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

The real negotiation is between humans on the one hand and chemistry and physics on the other. And chemistry and physics, unfortunately, don't bargain.

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

We wonder why we get credits only to be indebted

Even though, No one is infallible. However, spend much effort in making yourself better. Stand out! Don't follow the masses. It produces results

The roots of all commonwealth are planted in the understanding that we are all the same human beings

If you're a sports fan you realize that when you meet somebody, like a girlfriend, they kind of have to root for your team. They don't have a choice.

The role of citizen in our democracy does not end with your vote.

June is the time for being in the world in new ways, for throwing off the cold and dark spots of life.

In a very cold night, even houses want to have houses of their own to enter inside them and feel warm!

At the end of the day, it's hard to keep relationships with people. I've got my family, my best friends and if a girl's gonna be a part of that then it's got to be good. If not, I'm out.

When the world is in trouble, Australia responds. Australia is a good, global citizen.

The Scots are the backbone of Canada. They are all right in their three vital parts - head, heart and haggis.