I am silver and exact. I have no preconceptions.
Whatever you see I swallow immediately
Just as it is, unmisted by love or dislike.
I am not cruel, only truthful---
The eye of a little god, four-cornered.
Most of the time I meditate on the opposite wall.
It is pink, with speckles. I have looked at it so long
I think it is a part of my heart. But it flickers.
Faces and darkness separate us over and over.
Now I am a lake. A woman bends over me,
Searching my reaches for what she really is.
Then she turns to those liars, the candles or the moon.
These lines continue to  anthropomorphize  the mirror, i.e. give it human qualities. The mirror is given a heart, and is able to form abstract thoughts and meditate. 
 “Flickers” and “Faces and darkness separate us over and over” give us an image of faces coming to the mirror, looking at themselves, then turning off the lights and leaving the mirror alone in the darkness,  over and over. 
 The flickering of faces and darkness may also convey rapid passing of time; as the woman ages from a ‘young girl’ to an ‘old woman’.
Mirror