Naturalist, writer, adventurer, advocate and founder of the Sierra Club.
"When one tugs at a single thing in nature, he finds it attached to the rest of the world"
"As long as I live, I'll hear waterfalls and birds and winds sing. I'll interpret the rocks, learn the language of flood, storm, and the avalanche. I'll acquaint myself with the glaciers and wild gardens, and get as near the heart of the world as I can"."
"Anyhow we never know where we must go, nor what guides we are to get---people,storms, guardian angels, or sheep...."