Independently of these two comparatively silent streams of religious life, we may trace the current of polytheistic theology,--a current which naturally left a plainer trace in literature, since it contained all there might be in Greece of speculation and controversy in religious matters. The moral sanctions of religion were embodied in the domestic and civic worship; the pious imagination remained thereby all the freer to follow the analogies of physical objects in its mythology. Apollo was the father of Asclepius and the leader of the Muses; his ideal dignity and beneficence were vouched for by those attributes. He could well afford, therefore, as the Sun-god, to decimate the Greek army with the same fatal shafts with which he slew the Python. The moral function of the god was certain on other grounds, being enshrined in the local religions of the people. The poet might follow without scruple the suggestions of experience; he might attribute to the god the various activities, beneficent and maleficent, observable in the element over which he presided. This is a liberty taken even in the most moralistic religions. In the Gospels, for instance, we sometimes find the kingdom of heaven illustrated by principles drawn from observation of this world rather than from an ideal conception of justice; as when we hear that to him that hath shall be given and from him that hath not shall be taken away even that which he hath. Such characterizations appeal to our sense of fact. They remind us that the God we are seeking is present and active, that he is the living God; they are doubtless necessary if we are to keep religion from passing into a mere idealism and God into the vanishing point of our thought and endeavour. For we naturally seek to express his awful actuality, his unchallengeable power, no less than his holiness and beauty. This sense of the real existence of religious objects can only be maintained by identifying them with objects of actual experience, with the forces of Nature, or the passions or conscience of man, or (if it must come to that) with written laws or visible images.