John of Salisbury (c. 1120 – 25 October 1180), who described himself as Johannes Parvus ("John the Little"), was an English author, educationalist, diplomat and bishop of Chartres, and was born at Salisbury.
He was of Anglo-Saxon, not of Norman extraction, and therefore apparently a clerk from a modest background, whose career depended upon his education. Beyond that, and that he applied to himself the cognomen of Parvus, "short", or "small", few details are known regarding his early life. From his own statements it is gathered that he crossed to France about 1136, and began regular studies in Paris under Peter Abelard, who had for a brief period re-opened his famous school there on Montagne Sainte-Geneviève.
His vivid accounts of teachers and students provide some of the most valuable insights into the early days of the University of Paris. When Abelard withdrew from Paris John studied under Master Alberic and Robert of Melun. In 1137 John went to Chartres, where he studied grammar under William of Conches, and rhetoric, logic and the classics under Richard l'Evêque, a disciple of Bernard of Chartres. Bernard's teaching was distinguished partly by its pronounced Platonic tendency, and partly by the stress laid upon literary study of the greater Latin writers. The influence of the latter feature is noticeable in all John of Salisbury's works.
Around 1140 John returned to Paris to study theology under Gilbert de la Porrée, then under Robert Pullus and Simon of Poissy, supporting himself as a tutor to young noblemen. In 1148 he resided at the Abbey of Moutiers-la-Celle in the diocese of Troyes, with his friend Peter of Celle. He was present at the Council of Reims in 1148, presided over by Pope Eugene III. It is conjectured that while there, he was introduced by St. Bernard of Clairvaux to Theobald, whose secretary he became.
John of Salibury was secretary to Archbishop Theobald for seven years. While at Canterbury he became acquainted with Thomas Becket, one of the significant potent influences in John's life. During this period he went on many missions to the Papal See; it was probably on one of these that he made the acquaintance of Nicholas Breakspear, who in 1154 became Pope Adrian IV. The following year John visited him, remaining at Benevento with him for several months. He was at the court of Rome at least twice afterward.
During this time he composed his greatest works, published almost certainly in 1159, the Policraticus, sive de nugis curialium et de vestigiis philosophorum and the Metalogicon, writings invaluable as storehouses of information regarding the matter and form of scholastic education, and remarkable for their cultivated style and humanist tendency. The Policraticus also sheds light on the decadence of the 12th-century court manners and the lax ethics of royalty. The idea of contemporaries standing on the shoulders of giants of Antiquity first appears in written form in the Metalogicon. After the death of Theobald in 1161, John continued as secretary to his successor, Thomas Becket, and took an active part in the long disputes between that primate and his sovereign, Henry II, who looked upon John as a papal agent.
His letters throw light on the constitutional struggle then agitating England. In 1163, John fell into disfavor with the king for reasons that remain obscure, and withdrew to France. The next six years he spent with his friend Peter of La Celle, now Abbot of St. Remigius at Reims. Here he wrote "Historia Pontificalis". In 1170 he led the delegation charged with preparing for Becket's return to England, and was in Canterbury at the time of Becket's assassination. In 1174 John became treasurer of Exeter cathedral.
In 1176 he was made bishop of Chartres, where he passed the remainder of his life. In 1179 he took an active part in the Third Council of the Lateran. He died at or near Chartres on October 25, 1180.