The eye is the organ of a fire which does not burn but gives a mild light. The rays proceeding from the eye
of the outward light. With the departure of the outward light the inner also becomes less active; all inward
become calmer and less disturbed; and should any more prominent influences have remained they become in
where they congregate, so many pictures of the fancy.
— Plato says this somewhere; image from Cliptown.com