So this theme on the inner/outer world has been on my mind lately as well. Been having a lot of what I feel are intuitions and symbolic dreams. I agree to your words, “We don’t understand the nature of the soul” In Gems of Divine Mysteries that I feel touches on this subject, saying that ultimately we cannot mix the outer and inner, seen and unseen realities:

“All these hold true in their respective planes. It behoveth thine eminence in this station to consider each created thing in its own place, neither abasing nor exalting its true rank. For instance, if thou wert to reduce the unseen world to the realm of creation, this would be an act of sheer blasphemy, and the converse would likewise be the essence of impiety. Wert thou, however, to describe the unseen world and the realm of creation within their own stations, this would be the undoubted truth. In other words, wert thou to witness any transformation in the realm of the divine unity, no greater sin could be conceived in all creation, but wert thou to consider transformation in its own place and understand it accordingly, no harm could befall thee.”