In youth, before I lost any of my senses, I can remember that I was all alive, and inhabited my body with inexpressible satisfaction; both its weariness and its refreshment were sweet to me. This earth was the most glorious musical instrument, and I was audience to its strains.

—Henry David Thoreau. "Journal: July 16, 1851." I to Myself: An Annotated Selection from the Journal of Henry D. Thoreau.