" When I was younger I used to see the earth as a fundamentally stable and serene place, possessed of a delicate, nearly divine balance, which humans had somehow managed to upset. But as I studied trails more closely, this fantasy gradually evaporated. I now see the earth as the collaborative artwork of trillions of sculptors, large and small. Sheep, humans, elephants, ants: each of us alters the world in our passage. When we build hives or nests, mud huts or concrete towers, we re-sculpt the contours of the planet. When we eat, we convert living matter into waste. And when we walk, we create trails. The question we must ask ourselves is not whether we should shape the earth, but how. "

― Robert Moor , On Trails: An Exploration