Friedrich Spee in University of Virginia Press (2003-06-22)
Book 1
Simone Parkin in Back Bay Books (2020)
Book 2
David Brin in George C. Marshall Foundation (1999)
Internet Article 1
Jim Holt in slate.com (Feb. 12, 1998)
Internet Article 1
Stewart Brand in Whole Earth (Winter 1999)
Magazine Article 1
Eduard Brückner, Nico Stehr, Hans von Storch in Kluwer Academic Pub (2000-02-29)
Book 1
George Washington in Miller Center of Public Affairs, University of Virginia (01/08/1970)
Speech 1
Tom Holland in The Guardian (24 March 2013)
Internet Article 1
H.G Wells in Garden City Books (1949)
Book 8
Hanry Gallup Paine in BiblioBazaar, LLC (2009-06)
Book 14
Francesco De Sanctis in Barnes & Noble (1968)
Book 1
