… I must call your attention to the differences there are in the manner in which different representations stand for their objects. In the first place there are likenesses or copies - such as statues, pictures, emblems, hieroglyphics, and the like. Such representations stand for their objects only so far as they have an actual resemblance to them - that is agree with them in some characters. The peculiarity of such representations is that they do not determine their objects - they stand for anything more or less; for they stand for whatever they resemble and they resemble everything more or less.