Inside the angels is an emptiness

where evil would have lived;

but was withheld instead-

leaving half the mirror in darkness.


Inside the demon's a kind of hole

where good would have defined

half of the ticking mind-

to constitute a soul.


No soul lives wholly good or evil;

there's only half the requisite

polarity, that there must visit-

to enhance the memory's retrieval.

Patti Masterman

http://www.poemhunter.com/poem/where-evil-would-have-lived/