53. The intellectual formation of the future priest is based and built above all on the study of sacred doctrine, of theology The value and genuineness of this theological formation depend on maintaining a scrupulous respect for the nature of theology. The synod fathers summarized this as follows: "True theology proceeds from the faith and aims at leading to the faith.( ¹⁶³) This is the conception of theology which has always been put forward by the Church and, specifically, by her magisterium. This is the line followed by the great theologians who have enriched the Church's thinking down the ages. St. Thomas is extremely clear when he affirms that the faith is as it were the habitus of theology, that is, its permanent principle of operation,( ¹⁶⁴) and that the whole of theology is ordered to nourishing the faith.( ¹⁶⁵)

The theologian is therefore, first and foremost, a believer, a person of faith. But the theologian is a believer who asks himself questions about his own faith (fides quaerens intellectum), with the aim of reaching a deeper understanding of the faith itself. The two aspects (of faith and mature reflection) are intimately connected, intertwined: Their intimate coordination and interpenetration are what make for true theology and as a result decide the contents, modalities and spirit according to which the sacred doctrine (sacra doctrinal) is elaborated and studied.

Moreover, since the faith, which is the point of departure and the point of arrival of theology, brings about a personal relationship between the believer and Jesus Christ in the Church, theology also has intrinsic Christological and ecclesial connotations, which the candidate to the priesthood should take up consciously, not only because of what they imply for his personal life but also inasmuch as they affect his pastoral ministry. If our faith truly welcomes the word of God, it will lead to a radical "yes" on the part of the believer to Jesus Christ, who is the full and definitive Word of God to the world (cf. Heb. 1:1ff.). As a result, theological reflection is centered on adherence to Jesus Christ, the wisdom of God: Mature reflection has to be described as a sharing in the "thinking" of Christ (cf. 1 Cor. 2:16) in the human form of a science (scientia fidei): At the same time, faith inserts believers in the Church and makes them partake in the life of the Church as a community of faith. Hence theology has an ecclesial dimension, because it is a mature reflection on the faith of the Church by the theologian who is a member of the Church.( ¹⁶⁶)

These Christological and ecclesial dimensions which are connatural to theology, while they help candidates for the priesthood grow in scientific precision, will also help them develop a great and living love for Jesus Christ and for his Church. This love will both nourish their spiritual life and guide them to carry out their ministry with a generous spirit. This was what the Second Vatican Council had in mind when it called for a revision of ecclesiastical studies, with a view to "a more effective coordination of philosophy and theology so that they supplement one another in reveling to the minds of the students with ever - increasing clarity the mystery of Christ, which affects the whole course of human history, exercises an unceasing influence on the Church and operates mainly through the ministry of the priest."( ¹⁶⁷)

Intellectual formation in theology and formation in the spiritual life, in particular the life of prayer, meet and strengthen each other, without detracting in any way from the soundness of research or from the spiritual tenor of prayer. St. Bonaventure reminds us: "Let no one think that it is enough for him to read if he lacks devotion, or to engage in speculation without spiritual Joy, or to be active if he has no piety, or to have knowledge without charity, or intelligence without humility, or study without God's grace, or to expect to know himself if he is lacking the infused wisdom of God."( ¹⁶⁸)