The American Scholar - Gazing into the Abyss - By Christian Wiman [ed of Poetry]:
The wall is what separates them, but it is also the only means they have of communicating. “It is the same with us and God,” she says. “Every separation is a link.”
It’s probably obvious why this metaphor would appeal to me. If you never quite feel at home in your life, if being conscious means primarily being conscious of your own separation from the world and from divinity (and perhaps any sentient person after modernism has to feel these things) then any idea or image that can translate that depletion into energy, those absences into presences, is going to be powerful.