Nature
Confucius. 論語 [The Analects]. c. 479 BCE.
Confucius. The Analects, edited and translated by Annping Chin. Penguin Classics, 2014.
Maimonides. דלאלת אלחאירין [The Guide of the Perplexed]. c. 1190.
Maimonides. The Guide of the Perplexed, translated by Chaim Rabin. Hackett Publishing Company, 1995.
Dryden, John, translator. "The Cock and the Fox: Or, The Nun's Priest's Tale, From Chaucer." written by Geoffrey Chaucer. Fables Ancient and Modern. London: Jacob Tonson, 1700.
Dryden, John. "Fables Ancient and Modern." The Works of John Dryden, edited by Vinton A. Dearing. Vol. 7, University of California Press, 2002.
The Holy Bible: The King James Version. 1611. (Proverbs 6:6-8).
Monet, Claude. The Artist in His Studio, written by Alexander Liberman. Viking Press, 1960.
Thoreau, Henry David. "Walking." 23 Apr. 1851, Concord Lyceum, Concord, MA, USA. Lecture.
Thoreau, Henry David. "Walking." Civil Disobedience and Other Essays. Dover Publications, 1993.
Thoreau, Henry David. "Walking." 23 Apr. 1851, Concord Lyceum, Concord, MA, USA. Lecture.
Thoreau, Henry David. "Walking." Civil Disobedience and Other Essays. Dover Publications, 1993.
Galilei, Galileo. "Lettera des signor Galileo Galilei accademico linceo scritta all Granduchessa di Toscana [Letter to the Grand Duchess Christina]." Fiorenza, c. 1615.
Galilei, Galileo. "Letter to the Grand Duchess Christina." The Essential Galileo. Hackett Publishing, 2008.
Browne, Thomas, Sir. Religio Medici. London, 1643, pt. 1, sect. 16.
Browne, Thomas, Sir. "Religio Medici (1643)." Thomas Browne: Selected Writings, edited by Kevin Killeen. Oxford University Press, 2018, pt. 1, sect. 16.
Grist, Thomas. The Duchamp Dictionary. Thames & Hudson, 2014, p. 70.
Stegner, Wallace. "The Best Idea We Ever Had." Marking the Sparrow's Fall: The Making of the American West. H. Holt, 1998, p. 137.
Beston, Henry. The Outermost House. Doubleday, Doran and Co., 1928, ch. 3.
Beston, Henry. The Outermost House. Holt Paperbacks, 2003, ch. 3.
Klee, Paul. The Diaries of Paul Klee, 1898-1918, edited by Felix Klee. University of California Press, 1968. Originally a diary entry, 8 Oct. 1917.
Hopkins, Gerard Manley. "Inversnaid." Poems by Gerard Manley Hopkins. Humphrey Milford, 1918, I. 13.
Hopkins, Gerard Manley. "Inversnaid." Gerard Manley Hopkins: The Major Works, edited by Catherine Phillips. Oxford University Press, 2009.
Aristotle. Φυσικὴ ἀκρόασις Phusike akroasis [Physics]. 4th century BC.
Aristotle. Physics, translated by Robin Waterfield. Oxford University Press, 2008.
Da Vinci, Leonardo. The Notebooks of Leonardo da Vinci. c. 1519.
Galen. De Usu Partium Corporis Humani [On the Usefulness of the Parts of the Body]. c. 175.
Galen. On the Usefulness of the Parts of the Body, translated by Margaret Tallmadge May. Vol. 1, Cornell University Press, 1968, p. 119.
Quoted in The New York Times
Watson, Rob. Quoted in "We're Gonna Be Sorry." Written by Thomas L. Friedman. The New York Times, 24 July 2010.
Coleridge, Samuel Taylor. Notebook entry. 14 Apr. 1805.
Coleridge, Samuel Taylor. The Cambridge Companion to Coleridge, edited by Lucy Newlyn. Cambridge University Press, 2002.