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Rh This doctrine is abundantly confirmed by the following declarations of Pius IX. 'For the Church by its Divine institution is bound with all diligence to guard whole and inviolate the deposit of Divine faith, and constantly to watch with supreme zeal over the salvation of souls, driving away therefore, and eliminating with all exactness, all things which are either contrary to faith or can in any way bring into peril the salvation of souls. Wherefore the Church, by the power committed to it by its Divine Author, has not only the right, but above all the duty, of not tolerating but of proscribing and of condemning all errors, if the integrity of the faith and the salvation of souls should so require. On all philosophers who desire to remain sons of the Church, and on all philosophy, this duty lies, to assert nothing contrary to the teaching of the Church, and to retract all such things when the Church shall so admonish. The opinion which teaches contrary to this we pronounce and declare altogether erroneous, and in the highest degree injurious to the faith of the Church, and to its authority.'

From all that has been said, it is evident that the Church claims no jurisdiction over the processes of philosophy or science, except as they bear upon revealed truths; nor does it claim to intervene in philosophy or science as a judge or censor of the principles proper to such philosophy or science. The only judgment it pronounces regards the conformity or variance of such processes of the human intelli-