Ephemeral work made outside, for and about a day, lies at the core of my art and its making must be kept private.

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.

People do not realise that many of my works are done in urban places. I was brought up on the edge of Leeds, five miles from the city centre-on one side were fields and on the other, the city.

I have to understand the nature of change. And I cannot just work with stone or the more permanent materials. I need to work with leaves and ice and snow and mud and clay and water and the rising tide and the wind and all these.

I think I have been fashioned by the fickle weather of Britain that it is - it's forever changing. There's no kind of constant sun or dry weather or freezing weather, and I'm always having to change and adapt to that.

The British climate, although it is very wet, it is quite mild in winter. We don't get these severe - generally don't get severe winters.

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.