"The Feynman Lectures on Physics". Physics textbook by Richard P. Feynman, Robert B. Leighton, and Matthew Sands, volume I; lecture 1, "Atoms in Motion"; section 1-2, "Matter is made of atoms"; p. 1-2, 1964.
Alexander Hamilton, John Church Hamilton (1850). “The Works of Alexander Hamilton: Miscellanies, 1774-1789: A full vindication; The farmer refuted; Quebec bill; Resolutions in Congress; Letters from Phocion; New-York Legislature, etc”, p.84
Douglas MacArthur's address to the Annual Stockholders Sperry Rand Corporation in New York (July 30, 1957) as quoted in "General MacArthur Speeches and Reports 1908-1964" edited by Edward T. Imparato (p. 206), June 14, 2000.