The fact is that it is the land that has made us all Americans, and the moral is that it is the land which must be preserved to save our Americanism. Soil erosion, forest exploitation, and wildlife destruction are more insidious anti-American activities than Communism, Fascism, or foreign propagandizing.
"Indoors and Out", Nature Magazine number 33 (May 1940) p. 255, quoted in Mark Harvey, Wilderness Forever (2005) p. 45