Edward Bunbury, Thomas Ashby, Robert Conway, John A. Symonds, John Rose, Luigi Villari & Henry Steed, 1911 Encyclopædia Britannica (1911)
“ No city calls itself either Guelph or Ghibelline till it has expelled one-half of its inhabitants; for each party is resolved to constitute the state according to its own conception, and the affirmation of the one programme is the negation of the other. The Ghibelline honestly believes that the Guelphs will reduce society to chaos. ”
