Ambiguity is everywhere in Prince of Darkness . The thing that the religious and scientific characters can agree on is that there are places where the common-sense, intuitive rules do not apply, whether that's the level of quantum physics, or within the human heart. While Carpenter does juxtapose the scientific and religious viewpoints, they are not at odds with one another. Victor Wong's physicist and Donald Pleasance's priest are friends, not opponents, trying to work together to puzzle out the mystery. There is debate between the two positions, but, crucially, both recognise that they don't hold all the answers, that there are points where their certainties break down. Instead, they are both attempts to explain the universe from a human perspective - attempts that, it is increasingly clear, fall woefully short. This is cosmic horror, expressed not through the vast, but the minuscule. Just as humanity is humbled when looking outwards, into the boundless universe, so ...
Discussion of horror and whatever else takes my fancy.