Richard Long, 1988. "The idea of ephemerality was never my main interest, though. It's important to say that. Always my interest was to realise a particular idea. Obviously, some of my stone lines just disappear. They get overgrown or moved by sheep, or whatever. That's great. That's the natural way of the world. But the reason I made the work has really nothing to do with that. It is simply about making a line of stone in a particular place at a particular time."