Therefore, as a result of our study of history, we are bound to hold that theology is not identical either with scholasticism, or with Christianity, or with dogmas. It can give us the history of their life, since it has been the systematic statement of their interpretation through the faith of the different generations. And so it has varied from age to age, and can and must change in our time also, assimilating its culture, if Christianity still wishes to answer to the spiritual demands of our time. The religious and moral value of fundamental truths remains; only their explanations will change. The object of faith remains the same; its expression, which varies according to the intellectual and moral capacities of men's souls, will change.
In this matter our apologetic attitude in face of modern society is the same which, from the beginnings of the Church down to your Pontificate, has been adopted by the Apostles, the Fathers, the
