The monastic erudition of the old religious orders was a pillar of the Catholic Enlightenment within the Holy Roman Empire and many other European countries. Despite the enormous importance the monks had as champions of programmatic Enlightenment ideas, few of their original texts are available in modern editions. The present edition contributes to filling this lacuna by making available the main work of the Benedictine monk, Beda Mayr (1742–1794), who developed a modern and ecumenical Catholic theology. Diese Edition macht das Werk "Vertheidigung der katholischen Religion" (1789) des Benediktiners Beda Mayr (1742-1794) wieder zugänglich, das wegen seiner Neudefinition der kirchlichen und päpstlichen Unfehlbarkeit auf den "Index der verbotenen Bücher" gesetzt wurde. Brill's Texts and Sources in Intellectual History, vol. 5