Pope Gregory XVI
"Moreover, do they not try to make the Church human by taking away from the infallible and divine authority, by which divine will it is governed? And does it not produce the same effect to think that the present discipline of the Church rests on failures, obscurities, and other inconveniences of this kind? And to feign that this discipline contains many things which are not useless but which are against the safety of the Catholic religion? Why is it that private individuals appropriate for themselves the right which is proper only for the pope?........The Church is the pillar and foundation of truth, all of which truth is taught by the Holy Spirit. Should the church be able to order, yield to, or permit those things which tend toward the destruction of souls and the disgrace and detriment of the sacrament instituted by Christ?"
(Quo Graviora, 1833)