If you can reach just 10 percent of the population, you can begin to reach a tipping point; that's where true social movements take place - it's a numbers game. And when you reach that number, the truth becomes obvious and empires of injustice crumble and fall.

Change doesn't need to be overwhelming; it is not impossible.

What gives me hope is art - it's the most powerful weapons ever created. It's a weapon of mass construction.

Half of all species on Earth could disappear by the end of the century because of our collective impact.

At the end of the century, humans will look back at our impact on the planet and World War II will be a footnote compared to us presiding over the largest loss of biodiversity since a meteor hit the planet sixty-five million years ago.

The single most impactful thing you can do today is adopt a more plant-based diet.

A vegetarian driving a Hummer emits less carbon than a meat eater on a bicycle.