"The Power of Two: Bonus Outtakes From WD Interview With Lincoln Child & Douglas Preston". Interview with Brian A. Klems, www.writersdigest.com. January 12, 2012.
Michael Faraday, Christian Friedirich Schoenbein (1899). “The letters of Faraday and Schoenbein 1836-1862: With notes, comments and references to contemporary letters”
Opening sentence of his "underground colloquium" in March 1983, as quoted by Nicolas Gisin in "Quantum [un]speakables: from Bell to quantum information", p. 199, 2002.