In art school we're always taught that art is an end in itself - art for art's sake, expressing yourself, and that that's enough.

What's that Regina Spektor song? Museums are like mausoleums. Having your work in a museum is something we as artists aspire to, but I don't think that's something we need to worry about while we're alive. Typically your work will end up in a museum after you're dead. And maybe that's the function of a museum. It's an archive of your work after you're dead. But while we're alive, I like to see it in places where it's connected to day-to-day life and making a difference.

I don't even believe in magic, or ghosts or anything like that, and yet in a city like New York, on the subway, I definitely see ghosts and art seems to have some magical properties.

Infiltrating the mainstream was a natural extension of my street art. I've always tried to communicate ideas to the public as directly as possible.

We all know artists who like to collaborate, who like to work as a team. It all kind of depends what your habitual working method is.

If I do a picture, I want the audience to be the people I was just packed against on the subway or on the street, walking on Fourteenth Street. I don't want it to be some narrow public that I myself feel alienated from.

Street art is about as religious as I get - that's my faith, that even if people screen it out and didn't think they saw it, they did. Even if it was for a split second, it's become part of them and it's affecting them somehow.