 Although much of Calvin's work was in Geneva, his publications spread his ideas of a "correctly" Reformed church to many parts of Europe.In Switzerland, some cantons are still Reformed, and some are Catholic.Calvinism became the theological system of the majority in Scotland (see John Knox), the Netherlands (see William Ames, T. J. Frelinghuysen and Wilhelmus à Brakel), some communities in Flanders, and parts of Germany (especially these adjacent to the Netherlands) in the Palatinate, Kassel and Lippe with the likes of Olevianus and his colleague Zacharias Ursinus.