It's not unusual to find big political shifts that take place beneath the surface before they're visible above the surface.

Mother Nature does not do bailouts.

Believe in the power of your own voice.

We face a climate crisis now that is the most serious challenge our civilization has ever confronted. And the greatest country in the world [America] has to remain a part of this unprecedented global agreement to deal with it.

I'm not trying to top anything. I'm trying to be useful, to play a positive role, to serve the public interest.

The carbon fuels industry-big oil and coal-have a 50-year lease on the Republican Party and they are drilling it for everything it's worth.

The answer is to end our reliance on carbon-based fuels... If we succeed, we create booming new industries, wealth, clean secure energy and maybe we prevent the greatest disaster so far in human history, saving millions of lives while improving billions more. If we fail, basically it's business as usual while things slowly get worse all around us.