Henry David Thoreau, Barry Andrews (2005). “True Harvest: Readings from Henry David Thoreau for Every Day of the Year”, p.71, Unitarian Universalist Association of Congregations
Jean de La Bruyère, Luc de Clapiers marquis de Vauvenargues (1903). “La Bruyère and Vauvenargues: Selections from the Characters, Reflexions and Maxims”