David Brainerd (1822). “Memoirs of the Rev. David Brainerd: Missionary to the Indians on the Borders of New-York, New-Jersey, and Pennsylvania: Chiefly Taken from His Own Diary”, p.65
Plato (2013). “The Republic: A Socratic Dialogue Concerning the Definition of Justice and the Order and Character of the Just City-State and the Just Man (Beloved Books Edition)”, p.322, Lulu Press, Inc