No person shall preach without the permission of his Superior. All preachers shall explain the Gospel according to the Fathers. They shall not explain futurity or the times of Antichrist!
Pope Leo XAs far as Martin [Luther] himself is concerned, O good God, what have we overlooked or not done? What fatherly charity have we omitted that we might call him back from such errors?
Pope Leo XTo deny that in a child after baptism sin remains is to treat with contempt both Paul and Christ.
Pope Leo XNot the Christian religion only, but nature herself, cries out against the state of slavery.
Pope Leo XGive heed to the cause of the holy Roman Church, mother of all churches and teacher of the faith, whom you by the order of God, have consecrated by your blood. Against the Roman Church, you warned, lying teachers are rising, introducing ruinous sects, and drawing upon themselves speedy doom. Their tongues are fire, a restless evil, full of deadly poison. They have bitter zeal, contention in their hearts, and boast and lie against the truth.
Pope Leo X