Lastly, let me disclose a particular secret about the angels of the three heavens that people have not been aware of until now because they have not understood levels. It is this, that within every angel—and within every one of us here—there is a central or highest level, or a central and highest something, where the Lord’s divine life flows in first and most intimately. It is from this center that the Lord arranges the other, relatively internal aspects within us that follow in sequence according to the levels of the overall design. This central or highest level can be called the Lord’s gateway to the angels or to us, his essential dwelling within us.
It is this central or highest level that makes us human and distinguishes us from the lower animals, since they do not have it. This is why we, unlike animals, can be raised up by the Lord toward himself, as far as all the deeper levels of our mind and character are concerned. This is why we can believe in him, be moved by love for him, and therefore see him. It is why we can receive intelligence and wisdom, and talk rationally. It is also why we live forever.
However, what is arranged and provided by the Lord at this center does not flow into the open perception of any angel, because it is higher than angelic thought, and surpasses angelic wisdom.
from Heaven and Hell, Section 39