William Law (1739). “A Serious Call to a Devout and Holy Life: Adapted to the State and Condition of All Orders of Christians. By William Law, A.M.”, p.120
Frances Wright (1850). “Fanny Wright Unmasked by Her Own Pen: Explanatory Notes, Respecting the Nature and Objects of the Institution of Nashoba, and of the Principles Upon Which It Is Founded”, p.5