The Sorbonne was not only a teaching establishment, it conferred degrees. The theses of the Sorbonne acquired particular celebrity, the “Sorbonic thesis” being regarded as the ideal of the theological essay. During the middle ages and even to the end of the seventeenth century the Sorbonne was the great theological authority; but it had politics of its own which, viewed in the present day, do not seem to have been always in accord with its religious teaching. It took part with Étienne Marcel in the parliamentary and almost revolutionary movement which he directed in opposition to the party of the dauphin and of the aristocracy. It was a doctor of the Sorbonne, the Franciscan friar, Jean Petit, who wrote the “apologia” for the assassination of Louis of Orleans; and another doctor of the same institution, Jean Larcher, who, with the deputies of the university, publicly accused the dauphin of the murder on the bridge of Montereau, where, on the 10th of May, 1410, the Duke of Burgundy, Jean Sans-Peur, was assassinated by men belonging to the dauphin’s suite. To avenge this crime Philippe the Good, Jean’s son, seconded by the King of England, took possession on the 20th of June, 1420, of Montereau, which remained in the power of the English until 1428. The Sorbonne, representing the Church, condemned Joan of Arc as a sorceress, communicated its judgment to the Duke of Bedford, and, in a petition addressed to the King of England, demanded her extradition. When the religious war was at its height this body fulminated decrees in favour of the League, the Guises, and Spain against Henry III. and Henry IV. It was to the Sorbonne that the Guises addressed themselves in order to obtain theological support for their projected usurpation. The learned assembly did not go so far as to recommend the assassination of Henry III., but it pronounced in favour of revolt, and consigned the partisans, first of Henry III. and afterwards of Henry IV., to eternal damnation, finally offering the crown of France to Philip II. of Spain. After the triumph of Henry IV. the Sorbonne continued for a time its seditious manifestations; when Cardinal de Bourbon, its “apostolic conservator,” was arrested on the denunciation of the Procurator-general, it at the same time received a reprimand from the Parliament of Paris.