Looking, touching, material, place and form are all inseparable from the resulting work. It is difficult to say where one stops and another begins. The energy and space around a material are as important as the energy and space within. The weather--rain, sun, snow, hail, mist, calm--is that external space made visible. When I touch a rock, I am touching and working the space around it. It is not independent of its surroundings, and the way it sits tells how it came to be there.

When I make a work, I often take it to the very edge of its collapse, and that's a very beautiful balance.

If I had to describe my work in one word, that word would be time.

I can't edit the materials I work with. My remit is to work with nature as a whole. I find nature as a whole disturbing. Nature can be harsh – difficult and brutal, as well as beautiful. You couldn't walk five minutes from here without coming across something that is dead or decaying.

When it does get below freezing and there is - it's cold enough for ice to form, then that changes the whole landscape, and it makes the landscape a different landscape to the one that I worked with previously. And I want to understand that. But the big tension of the ice works is that they're often made when it's cold enough to freeze one piece of ice to another.

In contact with materials, I can see so much more with my hands than I can just with my eyes. I'm a participant, not a spectator. I see myself both as an object and a material, and the human presence is really important to the landscapes in which I work.

I think that any sculpture is a response to its environment. It can be brought to life or put to sleep by the environment.