As a government employee, you can't testify against the government.

I think we have a very brief window of opportunity to deal with climate change. No longer than a decade at most.

The evidence for human-made climate change is overwhelming.

Well, you know what happens to crime when the heat goes up.

It would be immoral to leave young people with a climate system spiraling out of control.

We're handing them [young people & future generations] a climate system which is potentially out of their control. We're in an emergency: you can see what's on the horizon over the next few decades with the effects it will have on ecosystems, sea level and species extinction

We have at most ten years—not ten years to decide upon action, but ten years to alter fundamentally the trajectory of global greenhouse emissions.