Human nature
Pythagoras. Quoted in The Lives and Opinions of Eminent Philosophers, written by Diogenes Laërtius. c. 240 AD, bk. 8, ch. 1, sect. 30.
Pythagoras. Quoted in The Lives of Eminent Philosophers, written by Diogenes Laërtius, translated by Pamela Mensch, edited by James Miller. Oxford University Press, 2018, bk. 8, ch. 1, sect. 30.
Keynes, John Maynard. The Economic Consequences of the Peace. Self-published, 1919, ch. 1.
Keynes, John Maynard. "The Economic Consequences of the Peace." The Essential Keynes. Penguin, edited by Robert Skidelsky, 2016, ch. 1.
Flaubert, Gustave. Letter to Maxime Du Camp. 26 June 1852.
Flaubert, Gustave. Letters of Gustave Flaubert, edited by Richard Rumbold, translated by J. M. Cohen. Weidenfeld & Nicolson, 1950.
Lord Bolingbrooke. Quoted in Observations, Anecdotes, and Characters, written by Joseph Spence, edited by Samuel Weller Singer. W. H. Carpenter, 1820.
Geertz, Clifford. "The Impact of the Concept of Culture on the Concept of Man." The Monday Lectures. 1965, University of Chicago, Chicago, IL, USA.
The Avengers. Directed by Joss Whedon, Marvel Studios, 2012.
Extraordinary Popular Delusions and the Madness of Crowds
Mackay, Charles. "National Delusions." Memoirs of Extraordinary Popular Delusions. Vol. 1, London: Richard Bentley, 1841.
Stevenson, Robert Louis and Fanny Stevenson. "Epilogue of the Cigar Divan." More New Arabian Nights: The Dynamiter. London: Longmans, Green & Co., 1885.
Melville, Herman. "Hawthorne and His Mosses." The Literary World. New York: Osgood and Company, 1850.
Melville, Herman. "Hawthorne and His Mosses." Tales, Poems, and Other Writings. Modern Library, 2002.
Coolidge, Calvin. "Second Inaugural Address." 4 Mar. 1925, East Portico, US Capitol Building, Washington, DC, USA.
De Lamartine, Alphonse. "Graziella." Les Confidences, 1849.
De Lamartine, Alphonse. Graziella, translated by Raymond N. MacKenzie. University of Minnesota Press, 2018, pt. 4, ch. 5.
Bradley, F. H. Appearance and Reality. London: George Allen & Unwin, 1893, preface.
Bradley, F. H. Appearance and Reality. Routledge, 2010, preface.
Close, Chuck. Quoted in Portraits: Talking with Artists at the Met, the Modern, the Louvre, and Elsewhere. Random House, 1998. Originally spoken during an interview with Michael Kimmelman, 1998.
Fromm, Erich. Escape from Freedom. Farrar & Rinehart, 1941, ch. 1.