I think that the most important requirement is to capture the essence of a piece of art. You look at it, essentially absorb it, and you have to be able to understand it visually without having to think about how it was done. I was already able to do that as a child.

For the cynic, art is defined through money. That, of course, is a very sad statement. But an artist is someone who does creative things.

I once went to a demonstration in Aachen against fare increases on public transport. A police officer pulled out a bunch of my hair, and there were a lot of violent beatings. That's when I thought to myself: You'd better leave it alone.

I went to the flea market in the morning and charged tourists money to take pictures of me. I looked pretty wild, with hair down to my waist, Indian robes, a floor-length fur coat. There must be lots of photos of me out there.

No one ever ordered anything from me. I painted because I wanted to.

Did I want to spend all my time working on a painting? No, I wanted to have fun, travel, meet women and live life.

The interesting thing is that in everyday life, I fail to see the most ordinary things. I often stumble and sometimes I even fall over. But when I draw or look at a painting, I go into a sort of overdrive and just see things differently than other people.