He studied with
Gilbert de la Porrée,[3] first in
Chartres and then in
Paris,[4] moving from four hearers to huge audiences in the hundreds.[5] He is an important commentator on the dispute between Gilbert and
Bernard of Clairvaux, about which he later wrote.[2] The Dialogus Ratii et Everardi, a work dated to the 1190s,[6] and variously considered either fictional or based on real conversations, contains an exposition of Gilbert's views.[7] The dialogue is presented between a letter to
Pope Urban III and another letter, a literary structure that has been traced back to
Sulpicius Severus.[8]
The identification of the author of the Dialogus and the
canonist author of Summula decretionum quaestionum, dated c.1180,[9] was made by
N. M. Häring; but this is not universally accepted.[10] The Summula is a digest of the Summa of
Sicardus of Cremona.[11]
References
N. M. Haring, Everard of Ypres and his appraisal of the conflict between St. Bernard and Gilbert of Poitiers, Mediaeval Studies 17 (1955) 143-72
Peter von Moos, Literatur- und bildungsgeschichtliche Aspekte der Dialogform im lateinischen Mittelalter. Der Dialogus Ratii des Eberhard von Ypern zwischen theologischer disputatio und Scholaren-Komödie, pp. 165–209 in G. Bernt, F. Rädle und G. Silagi (eds.), Tradition und Wertung. Festschrift für Franz Brunhölzl zum 65. Geburtstag, (1989)
^Krijna Nelly Ciggaar, Western Travellers to Constantinople: The West and Byzantium, 962-1204 (1996), p. 91.
^John Marenbon, Gilbert of Poitiers and the Porretans on Mathematica in the Division of the Sciences, pp. 46-50. in Rainer Berndt (editor), "Scientia" und "Disciplina": Wissenstheorie und Wissenschaftspraxis im 12. und 13. Jahrhundert (2002)
^von Moos; Jay Terry Lees, Anselm of Havelberg: Deeds Into Words in the Twelfth Century (1998), p. 231.
^Constant van de Wiel, History of Canon Law (1991), p. 119.
^Theresa Gross-Diaz, The Psalms Commentary of Gilbert of Poitiers: From Lectio Divina to the Lecture Room (1996), p. 17.