20th century
Leopold, Aldo. "The Land Ethic." A Sand County Almanac: And Sketches Here and There. Oxford University Press, 1949.
Berry, Wendell. "The Peace of Wild Things." Openings. Harcourt, Brace & World, 1968.
Justice, Donald. "Men at Forty." Night Light. Wesleyan University Press, 1967.
Sandburg, Carl. "Fog." Chicago Poems. Henry Holt and Company, 1916, I. 1.
Sandburg, Carl. "Fog." The Complete Poems of Carl Sandburg. Houghton Mifflin Harcourt, 2003, I. 1.
Simpson, George Gaylord. The Meaning of Evolution. Yale University Press, 1949, epilogue.
Schweitzer, Albert. Zwischen Wasser un Unwald [On the Edge of the Primeval Forest]. A. and C. Black, 1922, ch. 11.
Schweitzer. "On the Edge of the Primeval Forest." The Primeval Forest. Johns Hopkins University Press, 1998.
Quoted in The Times of London
Jung, Carl. "The Art of Living." Sunday Times, 17 July 1960.
Hedberg, Mitch. Comedy Central Presents. Comedy Central, 5 Jan. 1999.
Elizabeth II. Speech on her twenty-first birthday. 21 Apr. 1947, Cape Town, South Africa, Africa. Radio broadcast.
Hand, Learned. Speech to the Board of Regents. 24 Oct. 1952, University of the State of New York, Albany, NY, USA.
McPhee, John. Basin and Range. Farrar, Straus and Giroux, 1981.
Sandburg, Carl. "Grass." Cornhuskers. Henry Holt and Company, 1918, I. 1.
Sandburg, Carl. "Grass." The Complete Poems of Carl Sandburg. Houghton Mifflin Harcourt, 2003, I. 1.
Beerbohm, Max. "From Bloomsbury to Baywater." Mainly on the Air. William Heinemann, 1946. Originally published in World Review of Reviews, Aug. 1940.
Hand, Learned. "The Preservation of Personality." Commencement. 2 June 1927, Bryn Mawr College, Byrn Mawr, PA, USA.
Quoted in Playboy Magazine
Heller, Joseph. Conversations with Joseph Heller, edited by Adam J. Sorkin. University Press of Mississippi, 1993. Originally spoken during an interview by Sam Merrill. Playboy, June 1975.
Whalen, Philip. Scenes of Life at the Capital. Maya Quartos, 1970.
Coolidge, Calvin. "Equal Rights." 4 July 1916, Daniel Webster's home, Marshfield, MA, USA.
Deutsch, Karl. The Nerves of Government: Models of Political Communication and Control. Free Press, 1963, ch. 7.
Santayana, George. The Genteel Tradition at Bay. Charles Scribner's Sons, 1931, ch. 2.
Clark, Kenneth B. Dark Ghetto: Dilemmas of Social Power. Harper and Row, 1965, ch. 9.