Pope Leo XIII, Apostolicae Curae, Sept. 13, 1896: “When anyone has rightly and seriously made use of the due form and the matter requisite for effecting or conferring the sacrament he is considered by that very fact to do what the Church does.  On this principle rests the doctrine that a sacrament is truly conferred by the ministry of one who is a heretic or unbaptized, provided the Catholic rite be employed.  On the other hand, if the rite be changed, with the manifest intention of introducing another rite not approved by the Church, and of rejecting what the Church does, and what by the institution of Christ belongs to the nature of the sacrament, then it is clear that not only is the necessary intention wanting to the sacrament, but that the intention is adverse to and destructive of the sacrament.”