Ralph Waldo Emerson (1844). “An Address Delivered in the Court-house in Concord, Massachusetts, on 1st August, 1844: On the Anniversary of the Emancipation of the Negroes in the British West Indies”, p.30
Benjamin Franklin (1987). “Poor Richard's Almanack: Being the Choicest Morsels of Wisdom, Written During the Years of the Almanack's Publication”, p.14, Peter Pauper Press, Inc.