The relationship of the imagination to the realities of life, whether factual or moral, was not something that Sidney could take for granted. He is forever trying to make known its proper role; and for him, this means essentially the role of metaphor. Throughout the Apology, he not only identifies his metaphors but also tries to explain their workings; within the Arcadia, he exercises the utmost freedom in his use of them, but also signals them, so that they are clearly identified as metaphors. Finally, the whole of the Arcadia is a metaphor because it is fiction, a fiction set in pagan times and therefore needing from the Christian reader even more understanding of its relationship to higher truth. So, from small metaphors to large ones, he holds in his hands imagery to reflect the motions of the soul and the life of the affections as on a screen.