By Francoise Tetart-Vittu
By Roy Porter
By Jon Burlingame
By Elizabeth Abbott
By Nicholas Whittaker
By Bettelheim, Charles, Pearce, B.
By Abram Leon, George Weissman, D. Ferguson
By Christopher J. Uncles
By Ansprenger, Franz
By Roger Pethybridge
By Barrass, Robert
By John Iliffe (University of Cambridge)
By Al Murray
By Michael Cook
By John Peter Nettl
By Timothy Longman (Boston University)
By Alfred Rosmer, I.H. Birchall
By School Mathematics Project
By David Owen
By Adrian Hastings (University of Leeds)
By Eric Hobsbawm
By Karl Vocelka
By Richard Price (University of Maryland, College Park)
By Martin Thomas, Hal Draper, Karl Kautsky, Sean Matgamna
By Iris Berger (Author)
By Sir Gawain Bell
By Philip D. Curtin
By Newitt, Professor Malyn
By Michael Ignatieff, Amy Gutmann, Kwame Anthony Appiah, David A. Hollinger, Professor Thomas W. Laqueur
By John Keane