I look into the darkness
& only see the darkness
staring back at me.
You look into the dark
& see

the colours that can be
cajoled from it
from the darkness
you draw forth light
I can only see its absence
I see what is not there

You see
what can be.
I merely look.
You see.
You see!

Dónall Dempsey

http://www.poemhunter.com/poem/believing-is-seeing-for-miss-s/