You pick up a cracked looking glass.

We are observing ourselves being observed by the painter, and made visible to his eyes by the same light that enables us to see him. And just as we are about to apprehend ourselves, transcribed by his hand as though in a mirror, we find that we can in fact apprehend nothing of that mirror but its lustreless back. The other side of a psyche.

--Michel Foucault on Las Meninas