David D. Gilmore

The power of monsters is their ability to fuse opposites, to merge contraries, to subvert rules, to overthrow cognitive barriers, moral distinction, and ontological categories. Monsters overcome the barrier of time itself. Uniting past and present, demonic and divine, guilt and conscience, predator and prey, parent and child, self and alien, our monsters are our innermost selves.

But such monsters as sphinxes bring forth the necessary heroes to defeat them, and because such heroes make civilization by the example of monster-taming, without the former there would be no civilization at all.