Kiss of Peace (Osculum Pacis)

Psalm 85:10

Mercy and truth are met together; righteousness and peace have kissed each other.

Thomas Becket (st., abp. of Canterbury.) (1845). Vita s. Thomæ Cantuariensis archiepiscopi et martyris, ab auctoribus contemporaneis, ed. ab I.A. Giles. pp. 312–. 

Rex archiepiscopo dare signum pacis in osculo penitus abnegavit et abjuravit.

The king completely refused and abjured from giving  the archbishop the sign of peace by means of a kiss. 

The Kiss of Peace was a very public demonstration and declaration of reconciliation. It had to be done in front of everyone present as witnesses to the event. It sealed the compromise and agreement that had been reached. It was a very necessary act. Without it peace cannot be said to have been made or agreed to. 

References

Kiss of peace (Holy Kiss) - Wikipedia

Pax (liturgy) - Pax Vobiscum - Wikipedia

Cabrol, F. (1911). Pax in the Liturgy. In The Catholic Encyclopedia. http://www.newadvent.org/cathen/11595a.htm

Charles Du-Fresne sieur Du-Cange (1733). Glossarium ad scriptores mediae et infimae latinitatis. Ed. nova locupletior-opera et studio monachorum O. S. Benedicti e congregatione S. Mauri. Osculum Pacis: Osmont. pp. 1245–. 

Thurston, H. (1910). Kiss. In The Catholic Encyclopedia. New York: Robert Appleton Company. 

http://www.newadvent.org/cathen/08663a.htm

Walter F. Hook (1862). Lives of the Archbishops of Canterbury. Bentley. pp. 474–. 

William North (2010). The Haskins Society Journal 21: 2009. Studies in Medieval History. Boydell & Brewer. pp. 152–. ISBN 978-1-84383-560-8.

http://ducange.enc.sorbonne.fr/OSCULUM1

Kiril Petkov (2003). The Kiss of Peace: Ritual, Self, and Society in the High and Late Medieval West. BRILL.  ISBN 978-90-04-13038-8.

Kiril Petkov (2003). The Kiss of Peace: Ritual, Self, and Society in the High and Late Medieval West. BRILL. pp. 64–. ISBN 978-90-04-13038-8.

George Lyttelton Baron Lyttelton (1769). The History of the Life of King Henry the Second: And of the Age in which He Lived. J. Dodsley. pp. 286–.

James Craigie Robertson (15 November 2012). Materials for the History of Thomas Becket, Archbishop of Canterbury (Canonized by Pope Alexander III, AD 1173). Cambridge University Press. pp. 359–. ISBN 978-1-108-04928-3. 

James Craigie Robertson (15 November 2012). Materials for the History of Thomas Becket, Archbishop of Canterbury (Canonized by Pope Alexander III, AD 1173). Volume 3. Cambridge University Press. pp. 154–. ISBN 978-1-108-04927-6.

James Craigie Robertson (15 November 2012). Materials for the History of Thomas Becket, Archbishop of Canterbury (Canonized by Pope Alexander III, AD 1173). Cambridge University Press. pp. 367–. ISBN 978-1-108-04928-3.

James Craigie Robertson (15 November 2012). Materials for the History of Thomas Becket, Archbishop of Canterbury (Canonized by Pope Alexander III, AD 1173). Cambridge University Press. pp. 374–. ISBN 978-1-108-04928-3. 

James J. Spigelman (2004). Becket & Henry: The Becket Lectures. James Spigelman. pp. 209–. ISBN 978-0-646-43477-3. > Links to kiss

Michael Staunton (7 December 2001). The Lives of Thomas Becket. Manchester University Press. ISBN 978-0-7190-5455-6.   > Links to "kiss"

Michael Staunton (2001). The Lives of Thomas Becket. Manchester University Press. pp. 179–. ISBN 978-0-7190-5455-6.

Randall Lesaffer (2004). Peace Treaties and International Law in European History: From the Late Middle Ages to World War One. Cambridge University Press. pp. 162–. ISBN 978-1-139-45378-3.

Vollrath, Hannah: The kiss of peace. Peace Treaties and International Law in Europe  pp. 162-193.

In Randall Lesaffer (2004). Peace Treaties and International Law in European History: From the Late Middle Ages to World War One. Cambridge University Press. pp. 162–. ISBN 978-1-139-45378-3.

David Hilliam (2005). Thomas Becket: English Saint and Martyr. The Rosen Publishing Group. pp. 75–. ISBN 978-1-4042-0165-1. 

http://goo.gl/Shsk7H