In the delicate business of state which burdened him at this season, Charles IX showed more acumen than either his new-found friends of Protestant faith or the Catholics had expected to find, because while exerting himself to keep the peace with Spain on the one hand, on the other he endeavored to conciliate his Protestant subjects. Unlike his elder brother, Francis II, Charles IX was of strong physical frame, being big boned and vigorous, until the fatal taint of his heritage and his excesses undermined his constitution[1498] and brought on the disease of consumption of which he died. He was gross, even brutish in inclination, rejoicing in base physical sport and disinclined to books.[1499] But in the present politics Charles IX showed little of the rashness of his physical nature.[1500] Nevertheless the King went farther than caution approved in dealing with his new-found friends. He would have disarmed the suspicion of Spain, and the Guises[1501] to some degree, at least, if he had drawn close to the duke of Montmorency, whose moderate Catholicism, however impeachable, was not the detested heresy of the French Protestants. But instead of so doing, the King, unable to dissemble as much as his mother, openly manifested a great admiration for the admiral Coligny, than whom neither the Guises nor Spain had a more resolute foe. The admiral was received in Paris upon his arrival there early in September, 1571, with distinguished honors.[1502] His popularity with the King was at once a menace and a challenge to Philip II and the Guises.[1503] An added difficulty, as the result of this policy, was that Catherine de Medici, seeing her son so well affected toward the admiral, grew jealous of the latter’s influence, lest it supplant her own, and intrigued against him.