William Cowper, James Thomson (1832). “The Works of Cowper and Thompson: Including Many Letters and Poems Never Before Published in this Country. With a New and Interesting Memoir of the Life of Thomson”, p.114
"Actor Denzel Washington Delivers Incredibly Passionate Speech About Faith, Hard Work and Life’s True Riches" by Billy Hallowell, www.theblaze.com. May 28, 2014.