I like songs that go to different places and then come back.

I wouldn't even say "Imagine" is political. I think it's…more just sort of declaration of humanity. I don't find his political songs to be the ones that I go home and listen to. And I would say that of any artist. They're not the ones that interest…

Natural gas has been sold as clean energy. But when the gas comes from fracturing bedrock with about five million gallons of toxic water per well, the word “clean” takes on a disturbingly Orwellian tone. Don’t be fooled. Fracking for shale gas is in truth dirty energy.

I try not to do anything by formula.

When I was 15, a cabdriver asked me if I was Paul McCartney's daughter.

I think when people try to use their art for political views, I think they're art becomes smaller, less interesting. And so for me, as an artist, I'm trying to speak about things in a universal way and not be pedantic or small-minded and try to convince other people of my political views. But having said that, every day I live in sort of complete terror because of what I read in the newspaper and what is going on in the world. I'm constantly, as I think many of us are, overwhelmed by the sort of, mass psychosis that's occurring.

I wouldn't say the purpose of making art is to enjoy it necessarily. For me, it happens to be the thing I enjoy the most. I don't even know what the purpose of art is really, I just know that is something that makes me feel satisfied in a way that other things don't. That's all I know, that's why I like to write songs and films or draw. I just like to make things and somehow I find it gives me a feeling of satisfaction that I can't find in other areas of my life.