46 On this philosophical foundation the theological edifice is to be solidly raised. Promote the study of theology, Venerable Brethren, by all means in your power, so that your clerics on leaving the seminaries may admire and love it, and always find their delight in it. For in the vast and varied abundance of studies opening before the mind desirous of truth, everybody knows how the old maxim describes theology as so far in front of all others that every science and art should serve it and be to it as handmaidens (Leo XIII., Lett. ap. In Magna , Dec. 10, 1889). We will add that We deem worthy of praise those who with full respect for tradition, the Holy Fathers, and the ecclesiastical magisterium, undertake, with well-balanced judgment and guided by Catholic principles (which is not always the case), seek to illustrate positive theology by throwing the light of true history upon it. Certainly more attention must be paid to positive theology than in the past, but this must be done without detriment to scholastic theology, and those are to be disapproved as of Modernist tendencies who exalt positive theology in such a way as to seem to despise the scholastic.
Source: Pascendi Dominici Gregis (Vatican.va)