EN
The article first gives a short presentation of Angelus Silesius (1624-1677) or, Johannes Scheffler, and then more thoroughly analyses the first part of his work entitled Idea causarum fundatarum, transeundi a Lutheranis ad Ecclesiam Catholicam; comprehensarum Illationibus duabus which has been forgotten today. The baroque writer used exclusively brief statements which confirm the truth of the Roman faith and simultaneously debunk arguments in favor of Protestant religion. Above all his work was supposed to provide polemical ammunition for the supporters of the Roman Catholic Church and to justify discontinuing relations with Protestantism. In order to achieve this purpose, the writer enumerated and discussed arguments related to the most important arguable theological issues, such as the apostolic succession, miracles, attitude to God’s Word, religious life, celibacy, the figure of Luther and his adherents, etc.