Christian of Anhalt possessed a brain of inexhaustible fertility. As soon as one plan which he had framed appeared impracticable, he was ready with another. He was a born diplomatist, and all the chief politicians of Europe were intimately known to him by report, whilst with many of them he carried on a close personal intercourse. His leading idea was that the maintenance of peace was hopeless, and that either Protestantism must get rid of the House of Austria, or the House of Austria would get rid of Protestantism. Whether this were true or false, it is certain that he committed the terrible fault of underestimating his enemy. Whilst Maximilian was drilling soldiers and saving money, Christian was trusting to mere diplomatic finesse. He had no idea of the tenacity with which men will cling to institutions, however rotten, till they feel sure that some other institutions will be substituted for them, or of the strength which Maximilian derived from the appearance of conservatism in which his revolutionary designs were shrouded even from his own observation. In order to give to Protestantism that development which in Christian's eyes was necessary to its safety, it would be needful to overthrow the authority of the Emperor and of the Diet. And if the Emperor and the Diet were overthrown, what had Christian to offer to save Germany from anarchy? If his plan included, as there is little doubt that it did, the seizure of the lands of the neighbouring bishops, and a fresh secularization of ecclesiastical property, even Protestant towns might begin to ask whether their turn would not come next. A return to the old days of private war and the law of the strongest would be welcome to very few. [Sidenote: 1607. § 11. The occupation of Donauwörth.]