Under the influence of this feeling the princes of these southern regions for the most part adopted a religion very different from the courtly Lutheranism of the north. If Würtemberg continued Lutheran under the influence of the University of Tübingen, the rulers of the Palatinate, of Hesse Cassel, of Baden-Durlach, of Zwei-Brücken, sought for strength in the iron discipline of Calvinism, a form of religion which always came into favour when there was an immediate prospect of a death-struggle with Rome. [Sidenote: § 8. Courtly character of Calvinism in Germany.] Unhappily, German Calvinism differed from that of Scotland and the Netherlands. Owing to its adoption by the princes rather than by the people, it failed in gaining that hardy growth which made it invincible on its native soil. It had less of the discipline of an army about it, less resolute defiance, less strength altogether. And whilst it was weaker it was more provocative. Excluded from the benefits of the Peace of Augsburg, which knew of no Protestant body except the Lutheran, the Calvinists were apt to talk about the institutions of the Empire in a manner so disparaging as to give offence to Lutherans and Catholics alike. [Sidenote: § 9. Frederick IV., Elector Palatine.] Of this Calvinist feeling Christian of Anhalt became the impersonation. The leadership of the Calvinist states in the beginning of the seventeenth century would naturally have devolved on Frederick IV., Elector Palatine. But Frederick was an incapable drunkard, and his councillors, with Christian at their head, were left to act in his name. [Sidenote: § 10. Christian of Anhalt.]