3. The church has recognised her faith, that is religion itself, in her dogmas. Accordingly, one very important business of the History of Dogma is to exhibit the unity that exists in the dogmas of a definite period, and to shew how the several dogmas are connected with one another and what leading ideas they express. But, as a matter of course, this undertaking has its limits in the degree of unanimity which actually existed in the dogmas of the particular period. It may be shewn without much difficulty, that a strict though by no means absolute unanimity is expressed only in the dogmas of the Greek Church. The peculiar character of the western post-Augustinian ecclesiastical conception of Christianity, no longer finds a clear expression in dogma, and still less is this the case with the conception of the Reformers. The reason of this is that Augustine, as well as Luther, disclosed a new conception of Christianity, but at the same time appropriated the old dogmas.[6] But neither Baur's nor Kliefoth's method of writing the history of dogma has done justice to this fact. Not Baur's, because, notwithstanding the division into six periods, it sees a uniform process in the development of dogma, a process which begins with the origin of Christianity and has run its course, as is alleged, in a strictly logical way. Not Kliefoth's, because, in the dogmas of the Catholic Church which the East has never got beyond, it only ascertains the establishment of one portion of the Christian faith, to which the parts still wanting have been successively added in later times.[7] In contrast with this, we may refer to the fact that we can clearly distinguish three styles of building in the history of dogma, but only three; the style of Origen, that of Augustine, and that of the Reformers. But the dogma of the post-Augustinian Church, as well as that of Luther, does not in any way represent itself as a new building, not even as the mere extension of an old building, but as a complicated rebuilding, and by no means in harmony with former styles, because neither Augustine nor Luther ever dreamed of building independently.[8] This perception leads us to the most peculiar phenomenon which meets the historian of dogma, and which must determine his method.