7 Would it not be a still more deplorable thing, causing as it would the ruin of Christian people, if he, in the sacred ministry of the pulpit, should introduce language not conformable to his character of a preacher of the Gospel? Moved by such considerations we feel it our duty again and still more warningly to recommend that above all things the Seminaries should with jealous care keep up a proper spirit with regard ro the education of the mind as well as to that of the heart. They must never lose sight of the fact that they are exclusively destined to prepare young men not for merely human offices, however praiseworthy and honorable, but for that higher mission, which we lately spoke of, as ministers of Christ and dispensers of the mysteries of God.(8) From such a reflection altogether supernatural, it will be easy, as we have already said in our Encyclical to the clergy of France, dated September 8, 1899, to draw precious rules, not merely for the correct education of clerics, but also to remove far from the institutes in which they are educated, every danger, whether external or internal, or of a moral or religious order.
Source: Fin dal Principio (Vatican.va)