"A Dictionary of Thoughts: Being a Cyclopedia of Laconic Quotations from the Best Authors of the World, Both Ancient and Modern" ed. by Tryon Edwards, F. B. Dickerson Company, (p. 52), 1908.
Abigail Adams, John Adams, L. H. Butterfield, Marc Friedlaender, Mary-Jo Kline (1975). “The Book of Abigail and John: Selected Letters of the Adams Family, 1762-1784”, p.80, UPNE