Some Things are Dark by Edna St. Vincent Millay

Some things are dark-or think they are.

But, in comparison to me, / All things are light enough to see

In any place, at any hour.

For I am Nightmare: where I fly, Terror and rain stand in the sky

So thick, you could not tell them from

That blackness out of which you come.

So much for "where I fly": but when

I strike, and clutch in claw the brain-

Erebus, to such brain, will seem

The thin blue dusk of pleasant dream.