10. It may be objected that the image need not necessarily be attached
to its model; for there are images that subsist in the absence of their
model from which they are derived. For instance, when the fire ceases,
the heat that proceeds from it does not any the less remain in the
warmed object. The relation between this image and its model should be
understood as follows. Let us consider an image made by a painter. In
this case, it is not the model who made the image, but the painter;
and even so it is not even the real image of the model, even if the
painter had painted his own portrait; for this image did not arise from
the body of the painter, nor from the represented form, nor from the
painter himself, but it is the product of a complex of colors arranged
in a certain manner. We, therefore, do not really here have the
production of an image, such as is furnished by mirrors, waters, and
shadows. Here the image really emanates from the pre-existing model,
and is formed by it, and could not exist without it. It is in this
manner that the inferior potentialities proceed from the superior ones.