Ad Catholici Sacerdotii §48

⁴⁸ Not less than by his chastity, the Catholic priest ought to be distinguished by his detachment. Surrounded by the corruptions of a world in which everything can be bought and sold, he must pass through them utterly free of selfishness. He must holily spurn all vile greed of earthly gains, since he is in search of souls, not of money, of the glory of God, not his own. He is no mercenary working for a temporal recompense, nor yet an employee who, whilst attending conscientiously to duties of his office, at the same time is looking to his career and personal promotion; he is the "good soldier of Christ" who "entangleth not himself with secular business: that he may please Him to whom he hath engaged himself."