Thomas A. Edison's statement to a reporter during the first public demonstration of his incandescent (December 31, 1879), as quoted in Chris J. Magoc "Chronology of Americans and the Environment" (p. 46), 2011.
Ernest Holmes (1984). “Living the Science of Mind: The Only Writings by the Founder of SCIENCE OF MIND to Help You Understand His Classic Textbook”, p.2, DeVorss & Company