"MCM: I always think of your art as one of understatement.
RL: Doing almost nothing. Also there was that moment in the 1960s when the idea of filling the world with more and more objects became questionable. And, perhaps more in hindsight, there are connections with Arte Povera. You could argue that A Line Made by Walking  is the ultimate Arte Povera work, it's made of nothing and disappears to nothing. It has no substance, and yet it's a real artwork."
"RL: Or that a work could be made anywhere. On a mountain top, or it could disappear. Or, it could exist but no one else could find it. Or a local person could see it but not recognise it as art, or identify a stone I had placed on the road from another stone. I was really interested in all these different ways I could put my work in the world. And always in a simple way.
MCM: By marking your presence...
RL: ...or walking down the road. Walking across Ireland, putting a stone on the road at every mile along the way: 164 miles, 164 stones . If you put all those stones together it's a big work, but because it's spread out in space, it becomes invisible. Well, not invisible, but unnoticeable, which is different. And those stones are still out there somewhere, they haven't disappeared. So, you only know this work, which is equally a walk and a sculpture, through the information, the story, the artwork. "