Words inscribed upon the mantle of gonfalonier given to his son Cesare Borgia on March 29, 1499. "The Life of Cesare Borgia". Book by Rafael Sabatini, Chapter IV: "Gonfalonier of the Church", 1912.
F. Scott Fitzgerald (2015). “Babylon Revisited and Other Stories (Fitzgerald’s Greatest Short Stories): A Collection of short stories from the author of The Great Gatsby, The Side of Paradise, Tender Is the Night, The Beautiful and Damned, The Curious Case of Benjamin Button and many other notable works”, p.29, e-artnow