Artistic development
Baldessari, John. Interviewed by Karen Wright. Art in America, Oct. 2009.
Einstein, Albert. "Freiheit und Wissenschaft [Freedom and Science]." 1940.
Einstein, Albert. "On Freedom." Out of My Later Years. Philosophical Library/Open Road, 2015, ch. 6.
Boyce, Sonia. Interviewed by John Elmes. Times Higher Education, 17 Dec. 2015.
Ingres, Jean Auguste Dominque. Quoted in Degas, written by Keith Roberts. Phaidon Press, 1982, p. 7.
Delacroix, Eugène. Journal entry. 15 Apr. 1823.
Delacroix, Eugène. The Journal of Eugène Delacroix: A Selection, translated by Lucy Norton, edited by Hubert Wellington. Phaidon, 1995.
Rothko, Mark. Quoted in Mark Rothko, written by Jeffrey Weiss. Yale University Press, 2000.
Newman, Arnold. Interviewed by Alexis Anne Clements. American Suburb X, 20 Oct. 2009, www.americansuburbx.com/2009/10/interview-interview-with-arnold-newman.html.
Vitruvius Pollio. De Architectura Libri Decem [Ten Books of Architecture]. Rome: Fra Giovanni Sulpitius, c. 1486, bk. 1, ch. 1.
Vitruvius Pollio. Ten Books on Architecture, edited by Ingrid D. Rowland and Thomas Noble Howe. Cambridge University Press, 2001, bk. 1, ch. 1.