Anselm, Archbishop of Canterbury ... is the true type of the schoolman; firmly convinced of the truth of the dogmas and yet possessed of a strong philosophical impulse, he seeks to prove to reason what has to be accepted on authority. He bravely includes in his attempt to rationalize the faith not only such general propositions as the existence of God, but the entire church scheme of salvation, the Trinity, and Incarnation, and the Redemption of man. We must believe the Catholic doctrine--that is beyond cavil--but we should also try to understand what we believe, understand _why_ it is true.[1] [Footnote 1: Thilly: _History of Philosophy_, p. 169.] But theology has public as well as purely private importance. It must not be forgotten that religion is a social habit as well as a personal activity. From primitive life down to our own day, religion has been intimately associated with the other social activities of a people, and has indeed been one of the chief institutions of moral and social control. Ethical standards have been until very recent times in the history of Christian Europe almost exclusively derived from religion. Where the religious experience is of such crucial importance, it has been necessary to give it a fixed form and content which might be used to initiate the young and the outsider. Theology, though essentially a product of reflection upon the religious experience itself, tends to incorporate extra-religious material into its system. In its demonstration of the divine order and of man's relationship to the divine, it incorporates both science and history. Science becomes for it the manifestation of the divine arrangements of the universe; history becomes a revelation of the divine purpose and its realization. In primitive belief science and religion are practically indistinguishable from each other. The way of the gods is the way of the universe. The attribution of personal motives to the gods was primitive man's literal and serious way of conceiving the government of the cosmos. He believed himself actually to be living in a world governed by living and personal powers, an animistic world. The myths which describe the birth and life of the gods, the creation of man, the bestowing of the gift of fire are conceived as the literal and natural history of creation. Christianity affords a striking example of how theology incorporates science and natural history into its world view. For the early Christian Fathers, natural science was interesting and useful in so far as it illustrated, which it did, the ways of God upon earth.