Quotes from book
Our National Parks

Name: Our National Parks
Author: John Muir

John Muir

The Sierra Club founder offers an extensive overview of America's national parks at the turn of the 20th century, including appraisals of Yellowstone, Yosemite, Sequoia, and General Grant. Includes vintage photos.

“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 book Our National Parks

Source: 1900s, Our National Parks (1901), chapter 1: The Wild Parks and Forest Reservations of the West

“One touch of nature makes the whole world kin.”

John Muir book Our National Parks

The Cruise of the Corwin http://www.sierraclub.org/john_muir_exhibit/writings/cruise_of_the_corwin/default.aspx (1917), chapter 3: Siberian Adventures 
(Echoing William Shakespeare, Troilus and Cressida, iii, 3: "One touch of nature makes the whole world kin.")
1910s
Variant: One touch of nature makes all the world kin.
Source: Our National Parks