“The mountains are calling and I must go.”
John Muir (1838–1914) Scottish-born American naturalist and author
letter to sister Sarah Muir Galloway (3 September 1873); published in William Federic Badè, The Life and Letters of John Muir http://www.sierraclub.org/john_muir_exhibit/life/life_and_letters/default.aspx (1924), chapter 10: Yosemite and Beyond <br class="br">1870s