“Hikers, hunters, birdwatchers, technical rock climbers, anglers, skiers, canoeists–all these and many more turn to the outdoors to find challenge, not ease; uncertainty, not security…”
  — Laura & Guy Waterman, Wilderness Ethics, 1993

“The tendency nowadays to wander in wilderness is delightful to see. Thousands of tired, nerve-shaken, over-civilized people are beginning to find out that going to the mountains is going home; that wildness is a necessity; and that mountain parks and reservations are useful not only as fountains of timber and irrigating rivers, but as fountains of life.”
  — John Muir (1838-1914), American Naturalist and Conservationist, Founder of the Sierra Club, Our National Parks, 1901