Time is the most valuable thing a man can spend.

Chilon. Quoted in The Lives of Eminent Philosophers, written by Diogenes Laërtius, translated by Pamela Mensch, edited by James Miller. Oxford University Press, 2018, bk. 1, ch. 3.

Hawthorne, Nathaniel. The Marble Faun, edited by Susan Manning. Oxford University Press, 2009, ch. 24.

Socrates. Quoted in The Lives of Eminent Philosophers, written by Diogenes Laërtius, translated by Pamela Mensch, edited by James Miller. Oxford University Press, 2018, bk. 2, ch. 27.

Aristotle. The Art of Rhetoric, translated by Robin Waterfield. Oxford University Press, 2018, bk. 2, pt. 16, sect. 3.