Chapter XV, titled "Libellus Accusations", is about a few Croatian clergymen who were followers of Strossmayer's idea (namely, that to serve people means to serve God). The most prominent among them was Frano Ivanišević, a national fighter and promoter of Old Slavonic Church language as the language of liturgy in the Croatian Catholic Church. He demonstrated that a Catholic priest serving his people would not be against his Church and faith.