Anselm's Dream: A Drabble

Anselm dreamt.

He dreamt of a being of ultimate monstrosity, a beast nothing worse than which could be imagined, manifesting as some dread horror might in the imagination of an artist commissioned to paint a fresco of Hell.

He screamed at the beast that it was not real.

-- I am the being nothing worse than which can be imagined, it laughed. If your dream of me were all that was, you could imagine something much worse--a contradiction in terms, no?

Anselm screamed.

-- Ah, but to be the worst of all, it said...

Anselm wept.

-- You must imagine me omnipotent.