James Joseph Sylvester (1870). “The Laws of Verse: Or Principles of Versification Exemplified in Metrical Translations, Together with an Annotated Reprint of the Inaugural Presidential Address to the Mathematical and Physical Section of the British Association at Exeter”, p.119
"Social Statics, or The Conditions essential to Happiness specified, and the First of them Developed" by Herbert Spencer, (Pt. II, Ch. 4 : Derivation of a First Principle, § 3), 1851.
Declaration signed by forty-seven anarchists on trial after the failure of their uprising at Lyons in 1870, in J. Morrison Davidson 'The Old and the New' (1890).
Adam Reid, Benjamin Wood, Friedrich Schleiermacher, Henry Brewster Stanton, Laurens Perseus Hickok (1850). “Strength and beauty: A baccalaureate sermon, delivered at Williamstown, Ms. August 17, 1851”
Richard Salter Storrs (1875). “Conditions of Success in Preaching Without Notes: Three Lectures Delivered Before the Students of the Union Theological Seminary, New York, Januray 13, 20, 27: 1875; with an Appendix”, p.68
Robert Green Ingersoll (1920). “Ingersoll: Fifty Great Selections, Lectures, Tributes, After Dinner Speeches and Essays, Carefully Selected from the Twelve Volume Dresden Edition of Colonel Ingersoll's Complete Works”