If anything is endemic to Wyoming it is wind. This big room of space is swept out daily, leaving a bone yard of fossils, agates, and carcasses in every stage of decay. Though it was water that initially shaped the state, wind is the meticulous gardener, raising dust and pruning the sage.

Walking is also an ambulation of mind.

To rise above treeline is to go above thought, and after, the descent back into bird song, bog orchids, willows, and firs is to sink into the preliterate parts of ourselves.

Thirty years ago, my sister, Gale (so named because a gale hit Boston Harbor the night she was born), some friends and I stole a boat in the middle of the night and sailed it out of the Santa Barbara harbor. Suddenly we were becalmed and the current began pushing us toward the breakwall. With no running lights and no power, we were dead in the water. Out of that darkness a steel hull appeared: it was the local Coast Guard cutter. My father, stern-faced and displeased, stood in the bow.

A tree is an aerial garden, a botanical migration from the sea, from those earliest plants, the seaweeds; it is a purchase on crumbled rock, on ground. The human, standing, is only a different upsweep and articulation of cells. How treelike we are, how human the tree.

Autumn teaches us that fruition is also death; that ripeness is a form of decay. The willows, having stood for so long near water, begin to rust. Leaves are verbs that conjugate the seasons.

History is not truth versus falsehoods, but a mixture of both, a mélange of tendencies, reactions, dreams, errors, and power plays. What's important is what we make of it; its moral use. By writing history, we can widen readers' thinking and deepen their sympathies in every direction. Perhaps history should show us not how to control the world, but how to enlarge, deepen, and discipline ourselves.