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James C. Humes, Benjamin Franklin (1995). “The wit and wisdom of Benjamin Franklin: a treasury of more than 900 quotations and anecdotes”, Harpercollins
John Adams, Charles Francis Adams (1856). “The Works of John Adams, Second President of the United States: With a Life of the Author, Notes and Illustrations”, p.235
Benjamin Franklin (1987). “Poor Richard's Almanack: Being the Choicest Morsels of Wisdom, Written During the Years of the Almanack's Publication”, p.16, Peter Pauper Press, Inc.