10. Whence also, even in the case of the images of things corporeal which are drawn in through the bodily sense, and in some way infused into the memory, from which also those things which have not been seen are thought under a fancied image, whether otherwise than they really are, or even perchance as they are;—even here too, we are proved either to accept or reject, within ourselves, by other rules which remain altogether unchangeable above our mind, when we approve or reject anything rightly. For both when I recall the walls of Carthage which I have seen, and imagine to myself the walls of Alexandria which I have not seen, and, in preferring this to that among forms which in both cases are imaginary, make that preference upon grounds of reason; the judgment of truth from above is still strong and clear, and rests firmly upon the utterly indestructible rules of its own right; and if it is covered as it were by cloudiness of corporeal images, yet is not wrapt up and confounded in them.