I love Goldsworthy's writings in this. He does such a good job of making the reader see the world through his eyes, to see the themes and symbols in nature that preoccupy him. To me, this is exactly what a great art book should be like--to feel like walking into the artist's pocket dimension.
When I was a little girl, I did a lot of playing with nature. Crouching in the trees cutting up dead wood with a pocketknife, lying on the beach with my face centimeters from the sand, inspecting the shapes of individual grains...I still engage in this kind of exploration through play as an adult, but much less so. I don't have enough time anymore. In his art, Goldsworthy explores this kind of play, and takes it very seriously. To play with nature, experimenting with the physics of the world around you, opens you up to deep understanding.
A big theme in "Stone" is tension, the potential energy in everything. Rocks are such a fantastic medium with which to explore this idea. Goldsworthy creates arches of stones, held together only by tension. He describes every boulder as either on or resting from a journey, everything fluid on a large enough time scale. He mentions watching a huge boulder tumble off a cliff and roll across a road. Minutes later, a family drove across where the boulder had crossed, unaware of the sudden violence that was just there. Tension in everything, held in, built up, released, all things at once. Potential, creation, destruction, potential.