The reason why the stone is red is its iron content, which is also why our blood is red.

Ideas must be put to the test. That's why we make things; otherwise they would be no more than ideas. There is often a huge difference between an idea and its realization. I've had what I thought were great ideas that just didn't work.

When I was at art school, a lot of art education is about art being a means of self-expression, and as an 18-year-old I didn't know if I had a huge amount I wanted to express. It was a big moment when I decided I wanted to shift the emphasis or the intention of my art from something I disgorged myself upon and something that actually fed me or made me see the world or understand the world.

My approach to photograph is kept simple, almost routine. All work, good and bad, is documented. I use standard film, a standard lens and no filters. Each work grows, strays, decays-integral parts of a cycle which the photograph shows at its height, marking the moment when the work is most alive. There is an intensity about a work at its peak that I hope is expresses in the image. Process and decay are implicit.

There are occasions when I have moved boulders, but I'm reluctant to, especially ones that have been rooted in a place for many years.

Time confined into blind caves or extended through tunnels, responds to the call of infinity, which teases with its promise of freedom. outside the body, time is a pair of compasses in the hands of eternity, but inside it is a pendulum, fastened to the heart. the heart takes its measure from the lengthening swing of the pendulum surveying what time is left. in its own rhythm time spreads itself wildly here and there and is crippled elsewhere. its unequally distributed weight wounds my body - that is how the particularities of my life are manifest.

When I do the permanent projects or the big projects, when a work is finished, that's the beginning of its life.