283
Allan Adams (MIT), interview with author, May 23, 2008.
284
Joe Polchinski (University of California, Santa Barbara), interview with author, August 31, 2007.
285
Edward Witten (Institute for Advanced Study), e-mail letter to author, January 30, 2007.
286
Adams, interview with author, May 23, 2008.
287
Turnbull WWW Server, “Quotations by Gauss,” School of Mathematical Sciences, University of St. Andrews, St. Andrews, Fife, Scotland, February 2006, .
