John Locke, James Augustus St. John (1872). “Philosophical Works: Preliminary discourse by the editor. On the conduct of the understanding. An essay concerning human understanding”, p.37
John Locke (1728). “Two Treatises of Government: In the Former the False Principles & Foundation of Sir Robert Filmer & His Followers, are Detected & Overthrown; the Latter is an Essay Concerning the True Original, Extent & End of Civil Government”, p.49
John Locke (1824). “The Works of John Locke: The reasonableness of Christianity. A vindication of the Reasonableness of Christianity, from Mr. Edward's reflections. A second vindication”, p.233