According to Marsilio, all kinds of social activities should be under state control, and the clergy, as a social group should not have any rights and privileges in excess of permitted state. There should be a special church (canon) law, the clergy, such as the pope, should "be appointed to resign and" society. In the religious sphere does not have any religious truths of reason, that it would be difficult to understand and which should be interpreted only by specially trained qualified persons. Faith and reason are divided. The Bible is the only source of religious knowledge. Therefore, there is no reason to give the words of the Pope more important than the words of other Christians. In view of this, according to Marsilio, namely the church council to make decisions on matters of faith.