This was made possible through their expertise, their willingness to collaborate with others (e.g. theologians such as Yves Congar were offered lodging at the Pontifical Belgian College in Rome) and by holding several key positions (e.g. Msgr. Gerard Philips' role as adjunct-secretary of the Doctrinal Commission made him into the key architect of Vatican II's Dogmatic Constitution on the Church). A painful period for the theological faculty, as it was for the entire university, was the end of the 1960s. Discord flared up among professors and students regarding the question of which language should be used for educating students. This came to expression, among other ways, in the so-called Leuven Flemish-movement, and the linguistic conflict led to the splitting of the University into a Dutch-language and a French-language part in 1969; As a result, the Theological Faculty was also split in two: the Dutch-language faculty remained in the Flemish town of Leuven and the French-language group went to be a part of the newly established "Université Catholique de Louvain" in Louvain-la-Neuve. From this point on this article deals only with the Dutch-language Faculty of Theology in Leuven. Division of the Leuven University had further consequences for the theological faculty. Preeminently, the professor corps was divided, and henceforth it became a Dutch-language education and research body, along with an international English-language program. In 1974 a new library was opened (called the Maurits Sabbe Library since 2004), which is one of the most extensive theological libraries in the world. This library houses various archive collections as well, including the Centre for the Study of the Second Vatican Council. During the postconciliar period, the number of lay theologians increased strongly among professors and students. In 1970 the Higher Institute of Religious Studies was integrated to a greater extent into the faculty's full-time program. Following the decree for universities in 1991, this institute was completely integrated into the faculty's academic training. The current faculty is a Roman Catholic Faculty of Theology, and as such stands in the tradition of the Old Faculty established in 1432. Both state diplomas or degrees in theology and canonical degrees are granted by the faculty, which organizes its programs according to the Apostolic Constitution "Sapientia Christiana" of 1979. Nevertheless, students from various backgrounds and confessional denominations are enrolled in faculty programs.