Pseudo-Grosseteste was the anonymous author of a Summa Philosophiae, written between 1265 and 1275. Because of the reference in the Summa to Simon de Montfort's death (1265), it could not have been written by Robert Grosseteste, who died in 1253. Bartholomew of Bologna, Robert Kilwardby, and a disciple of Roger Bacon have all been suggested as the author, but there is no consensus. It does seem probable, however, that he was English and was either a Franciscan or a secular.

The Summa, which begins with a history of philosophy similar to that found in Bacon's Opus Maius, is a work of considerable subtlety and sophistication, an advanced product of the so-called Augustinian school. It holds that there is a universal wisdom in which both ancients and moderns share, perfected however by Christian revelation. Those concerned with wisdom are theosophists, to whom truth is directly revealed; theologians, who systematize and make more clear...