(German title: Ist die Gliederung der Fundamentaltheologie in Traktate eine sinnvolle Weiterfuhrung der traditionellen Demonstrationes?). The article presents a traditional classification of the subjects of fundamental theology based on three demonstrationes. Despite the fact that it was criticized by the participants of Vaticanum II, its existence in the present (German) fundamental theology can be easily remarked and it is supported by methodological reasons. Deliberations shown in the article promote such an attitude by analysing the conception of a tract and its scientific character. By comparing, at the level of methodology, a tractatus with the poetic dogmatic theology of German theologian Alex Stock, a necessity of improving clear conceptions of religion, Revelation and Church (and other terms using in theology) instead of its descriptions only is revealed.