But whether by images or no, who can well affirm? For I name a stone, I name the sun, and the things themselves are not present to my senses, but their images are near to my memory. I name some pain of the body, yet it is not present when there is no pain; yet if its image were not in my memory, I should be ignorant what to say concerning it, nor in arguing be able to distinguish it from pleasure. I name bodily health when sound in body; the thing itself is indeed present with me, but unless its image also were in my memory, I could by no means call to mind what the sound of this name signified. Nor would sick people know , when health was named, what was said, unless the same image were retained by the power of memory, although the thing itself were absent from the body. I name numbers whereby we enumerate; and not their images, but they themselves are in my memory. I name the image of the sun, and this, too, is in my memory. For I do not recall the image of that image, but itself, for the image itself is present when I remember it. I name memory, and I know what I name. But where do I know it, except in the memory itself? Is it also present to itself by its image, and not by itself?