If you go back and look at President Reagan's speeches, they bring you to tears almost.

Sure, 'An Inconvenient Truth' was my first documentary. What a wonderful experience. I saw Al Gore doing his slideshow presentation, and had this nutty idea that we had to make a movie out of it.

Film is a very collaborative medium. If you're smart enough, you learn how to maintain your vision while drawing resourcefully from all the people around you.

Being with Al Gore on the red carpet in Cannes was exciting - he's like a rock star unto himself!

To be sure, governments will remain critical to any comprehensive effort to save our planet.

The average ordinary citizen can do a lot of different things when it comes to the climate crisis.

Making movies is my profession. I like doing it a lot.

She was just so sad. Her whole face hung with it, like sadness was her personal gravity.

If all else fails, try to get some sleep…whether you realize it or not, getting enough sleep can make it easier to solve problems, control your emotions, and cope with change.

Dying may just be the best thing that ever happened to me.

Those who think 'Science is Measurement' should search Darwin's works for numbers and equations.

...I'm so over the tattoos and the T-shirts and rings through the noses. It's not pretty, it's not pleasant, it's not exciting. Please stop it now.

Remember to be calm in adversity.

I always felt like I had the word "illegal" tattooed on my forehead.

Remember, gentlemen, what a Roman emperor said: The corpse of an enemy always smells sweet.

From National Lampoon, you go directly to Saturday Night Live, because it's a lot of the same people.