Edmund Burke, James BURKE (Barrister-at-Law.) (1854). “The Speeches of the Right Hon. Edmund Burke, with Memoir and Historical Introductions. By James Burke”, p.178
Jeremy COLLIER (the Nonjuror.), J. E. (1838). “Pearls of Great Price: or, Maxims, reflections, characters and thoughts, on miscellaneous subjects ... Selected from the works of the Rev. Jeremy Collier by the editor of “Sir William Jones's Discourses,” etc. [The editor's preface signed: J. E., i.e. James Elmes.]”, p.74
Horace Walpole (1848). “Letters Addressed to the Countess of Ossory, from the Year 1769 to 1797: Now First Printed from Original Mss. Edited, with Notes, by R. Vernon Smith”, p.538
"Not Knowing". The Congregationalist; set to music as a hymn by Philip Paul Bliss in the 1870s, as quoted in "Glimpses of Christian History Presents More Stories: Blessed Bliss" (2007) by Thomas Corts, March 1869.