I had such an intense relationship to every person. I still see people on the street and we lock eyes, and say "Oh my god!" and we just kiss and stay like that and sometimes cry.

I realise the power of art that does not hang on the walls of galleries.

I had to leave some traces. In the beginning, I would give complete instructions to the photographer. In the '70s, people would come to photograph your work and you would just end up with this crazy material that had nothing to do with your work; maybe I'd pick up two or three photographs that were the closest to the idea. This is why when you look at the '70s, you see much less documentation and really bad material. The material will become misleading to what the piece was.

From the moment you are born, you could die. I think as an artist it is important to meditate on that.

Most people are more comfortable with what is familiar. I’ve spent my life doing the opposite.

I am not a therapist. I am not a spiritual leader. These elements are in the art: it is therapeutic, spiritual, social and political - everything. It has many layers. But art has to have many layers. If it doesn't, then forget it.

But what is art other than revealing human nature?