It was not enough for the refugees to have returned; their christian activity must be employed to the advantage of France. At the beginning of June, Roussel went to Blois. Margaret wished to make this city--the favourite residence of the Valois, and notorious for the crimes perpetrated there in after years--a refuge for the persecuted, a caravanserai for the saints, a stronghold of the Gospel. On the 29th of June Lefèvre also went there.[506] The king intrusted him with the education of his third son and the care of the castle library. Chapelain, physician to the Duchess of Angoulême, and Cop, another doctor, of whom we shall see more hereafter, were also in that city; and all of them, filled with gratitude towards Francis I., were contriving the means of imparting ‘something of Christianity to the Most Christian King’[507]--which was, in truth, very necessary. Thus things were advancing. It seemed as if learning and the Gospel had returned with the king from banishment. Macrin, whose name Zwingle placed side by side with that of Berquin, was set at liberty.[508] Cornelius Agrippa returned to Lyons. Sprung from an ancient family of Cologne, he had served seven years in the imperial army; he then became a great _savant_ (and not a great magician, as was supposed), doctor of theology, law, and medicine. He published a book on Marriage and against celibacy, which excited much clamour. Agrippa was astonished at this, and not without reason. ‘What!’ he exclaimed, ‘the tales of Boccaccio, the jests of Poggio, the adulteries of Euryalus and Lucretia, the loves of Tristan and of Lancelot, are read greedily, even by young girls[509] ... and yet they cry out against my book on Marriage!’--This explains an incident in history: the youthful readers of Boccaccio became the famous ‘squadron’ of Catherine de’ Medici, by whose means that impure woman obtained so many victories over the lords of the court. When men heard of these deliverances, they thought that Francis I., seeing Charles V. at the head of the Roman party, would certainly put himself at the head of the evangelical cause, and that the two champions would decide on the battle-field the great controversy of the age. ‘The king,’ wrote the excellent Capito to the energetic Zwingle, ‘is favourable to the Word of God.’[510] Margaret already saw the Holy Ghost reviving in France the _one_, _holy_, and _universal Church_. She resolved to hasten on these happy times, and, leaving Angoulême and Blois in the month of July, arrived in Paris.