As observed by Mozi, we are an image turned upside-down

Aristotle’s sun was broken by wickerwork, by the leaves of a tree

We are illumined, according to Theon, by unbent rays.

Alhazen has given to us a dark room, an aperture for reversal,

And DaVinci saw our darkened eyes filled with light.

Shen Kuo writes of an object, pearl bright, hovering above the city of Yangzuo,

Casting shadows in the night for miles; brilliant, intense, and strange.