Now that other people have my works, it's really important to me that what they have has longevity.

For one work we developed a human hair felt, which involved collecting and sorting hundreds of kilos of human hair, and then blending it will a tiny percentage of black merino followed by carding and felting.

I have had sculptures cast in bronze, silver and aluminium. My drawings are all graphite or pigment ink and gouache on paper.

We always use resin instead of polyurethane, even though it takes more work and is in places where it can't be seen, because resin tends to be more UV stable than urethane.

Thinking is a social process. I talk to everyone from children to anthropologists and philosophers. I try my ideas out on people and they talk back to you. That's how ideas get formed.

It's much easier to do something that's seen as being serious because people accept it right away, they don't question what you do, they just accept, because they think you must be right.

I certainly don't see the humour in my work as something that detracts from its seriousness. It's just a way of making difficult messages more palatable.