With regard to theology the case is even stronger than with regard to philosophy. Practically all of the great authorities in theology belong to the Thirteenth Century. It is true that men like Saint Anselm lived before this time and were leaders in the great movement that culminated in our century. Saint Anselm's book, _Cur Deus Homo_, is indeed one of the best examples of the combination of scholastic philosophy and theology that could well be cited. It is a triumph of logical reasoning, applied to religious belief. Besides, it is a great classic and any one who can read it unmoved by admiration for the thinker who, so many centuries ago, could so trenchantly lay down his thesis and develop it, must be lacking in some of the qualities of human admiration. The writers of the Thirteenth Century in theology are beyond even Anselm in their marvelous powers of systematizing thought. One need only mention such names as Albertus Magnus, Thomas Aquinas, Bonaventure. Duns Scotus, and Raymond Lully to make those who are at all acquainted with the history of the time realize, that this is not an idle expression of the enthusiasm of a special votary of the Thirteenth Century. As we shall see in discussing the career of Saint Thomas Aquinas, the Catholic Church still continues to teach scholastic theology on exactly the same lines as were laid down by this great doctor of the church in his teaching at the University of Paris. Amid the crumbling of many Christian systems of {81} thought, as upheld by the various protestant sects, there has been a very general realization that the Catholic Church has built up the only edifice of Christian apologetics, which will stand the storms of time and the development of human knowledge. Confessedly this edifice is founded on Thirteenth Century scholasticism. Pope Leo XIII., than whom, even in the estimation of those who are least sympathetic toward his high office, there was no man of more supremely practical intelligence in our generation, insisted that St. Thomas Aquinas must in general principle at least, be the groundwork of the teaching of philosophy and theology as they are to form the minds of future Catholic apologists.