Luther was well aware of the significance of printing for the dissemination of ideas. His theses included a condemnation of the bad theology in the small booklet that accompanied the indulgence commissioners. Gradually his 95 theses became common knowledge (it is not certain that he nailed them to the door of the All Saints' Church in Wittenberg) and resulted in a presentation of 106 anti-Lutheran theses by Tetzel at the University of Frankfurt. Luther responded with a published sermon that depreciated the notion of indulgences. Within a few weeks a series of pamphlets were printed as scholars and theologians refuted each other’s arguments in public.