John Muir (April 21, 1838 – December 24, 1914) was one of the earliest modern preservationists. His letters, essays, and books telling of his adventures in nature, and wild life, especially in the Sierra Nevada Mountains of California, were read by millions and are still popular today. His direct activism helped to save the Yosemite Valley and other wilderness areas. The Sierra Club, which he founded, is now one of the most important conservation organizations in the United States. But more than that his vision of nature's value for its own sake and for its spiritual, not just practical, benefits to mankind helped to change the way we look at the natural world.
Hiking in the Muir Woods