Frances Wright (1829). “Course of popular lectures; with 3 addresses on various public occasions, and a reply to the charges against the French reformers of 1789”, p.45
Jean de La Bruyère, Luc de Clapiers marquis de Vauvenargues (1903). “La Bruyère and Vauvenargues: Selections from the Characters, Reflexions and Maxims”