A second letter of Castelli’s to Galileo of 16th March, 1630, contains far more important and encouraging intelligence. According to this, Thomas Campanella[221] had told the Pope at an audience, that a short time before he had tried to convert some German nobles to the Catholic faith, that he had found them favourably disposed, but when they heard of the prohibition of the Copernican system, they were so indignant that he could do nothing more with them. To this Urban replied: “It never was our intention; and if it had depended upon us, that decree would not have been passed.”[222] These pregnant words, coolly uttered by Urban, when repeated to Galileo were well calculated to mislead him into infringing the decree, in the spirit if not in the letter. They seem, however, to have been at least as incorrect as the reply reported on the same subject to Cardinal Hohenzollern in 1624. Urban entirely forgot that he had not interceded in any way in 1616 for the astronomical system threatened with condemnation. And his conduct showed that he must have been a party to it. We need only call to mind how inexorable he had been on the question in 1624 to Galileo himself, and how sternly he afterwards allowed proceedings to be taken against him. Urban could only have acted in this way because he was convinced of the danger of the Copernican system to the Christian philosophy. And he was far too shrewd not to perceive how the modern views threatened a religion based upon ancient astronomy. His remark to Campanella, therefore, was nothing but smooth words, and this is fully confirmed by subsequent events. But they could not fail to inspire Galileo with confidence that under Urban VIII. an ingenious circumvention of the decree would give no offence at the Vatican. Besides this, Castelli reported in the same letter that Mgr. Ciampoli, who was also well informed, was firmly convinced that Galileo’s personal appearance at Rome would immediately remove any difficulty that might occur about publishing the “Dialogues.”[223] Another letter from Castelli of 6th April urged him to set out for the papal residence, where, to quote the words of Ciampoli, “they were longing for him more than for a lady love.”[224]