In 1998, I was screening 'Good Will Hunting' at Camp David. And I was saying, 'Nice to meet you, Mr. President. Nice to meet you, Mrs. Clinton.' Madeleine Albright, Sandy Berger, Senator Daschle. It was an extraordinary day.

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

I was with - he wasn't the president then, but - Barack Obama, when he was running, in Washington, during Black Congressional Caucus Weekend, and did a panel about global warming with him. It was almost as if I switched careers for a while, and became a political activist.

Being scared is really a good thing. It's being scared of being scared that's bad. Being scared of walking through your fear, going to a place of true creativity - that's what an artist is, that's what he does. If you do that, then being inspired by your contemporaries or people from the past is really great.

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

I had one of those light bulb 'a ha' moments while screening 'Good Will Hunting' in Camp David in 1998 - Madeleine Albright and the Clintons were there, and I just became really inspired by all of these amazing people. I left the screening asking myself what I could do.

In 1998, I was screening 'Good Will Hunting' at Camp David. And I was saying, 'Nice to meet you, Mr. President. Nice to meet you, Mrs. Clinton.' Madeleine Albright, Sandy Berger, Senator Daschle. It was an extraordinary day.