 In this project, he was partly successful. He wrote a new and provocative text on semiotics, and influenced the addition of perspectiva to mathematical studies (the Quadrivium) as a required university subject. He succeeded in setting out a model of an experimental science on the basis of his study of optics. The latter was used in his extension of experimental science to include new medicines and the general health care of the body. He did this in a new context: the application of linguistic and scientific knowledge for a better understanding of Theology and in the service of the Res publica Christiana. Bonaventure and John Pecham were among his first readers. It is clear that with the possible exception of the uses or astrology and alchemy, Bacon shared in Bonaventure’s project seeking a “reduction” of the sciences to theology. Bacon also found a sympathetic reader and interpreter in the great secular scholar of the Sorbonne, Peter of Limoges (d. 1306). He uses Bacon’s optics for scientific and moral investigation. Bacon through the work of Peter of Limoges may have influenced Raymond Lull. Sometime in the late 1270s or early 1280s, Bacon returned to Oxford, where he completed his edition with introduction and notes of the Secretum secretorum, a Latin translation of an Arabic text on the education of the Prince, the Sirr-al-‘asrar. He believed it to be a work by Aristotle written for Alexander the Great. This work of advice to the Prince points to Bacon’s close connections to the Papal Court through Pope Clement IV, the French Court through Alphonse of Poitiers, and the English Court. His contacts with the Papal Curia were mediated by William Bonecor, Ambassador for King Henry III. Bacon died at Oxford c. 1292.