“The Mountains Are Calling and I Must Go”: The Muir Letter Behind the Slogan
The short answer: yes, John Muir wrote “the mountains are calling and I must go”, in a letter from Yosemite Valley to his sister Sarah Muir Galloway, dated 3 September 1873. So the name on the poster is right. The sentence is not finished. Muir kept writing, and the words that follow change what he…
