Nouvelle Théologie theologians, in response, sought a return of Catholic Theology to (what they perceived was) its original purity of thought and expression. To accomplish this, they advocated a 'return to the sources' of the Christian Faith: namely, Scripture and the writings of the Church Fathers. This methodological move is known by its French name, ressourcement (French, "return to the sources"). Along with this, the movement adopted a systemic openness to dialogue with the contemporary world on issues of theology. They developed also a renewed interest in biblical exegesis, typology, art, literature and mysticism.