In the material world, a foot is one thing, a ladder is another and wings still another. In the interior world, however, feet, ladders, and wings are the affections of a good will, with them, we walk, we climb, and we fly.
(En. in ps. 38, 2)
It is night while this life is lived. And when is this night illuminated? It is lighted when Christ descends to the night. He took the flesh of this generation and our night received the light.
(En. in ps. 138,14)
Fly over what is bodily and embrace the being of the soul; transcend the soul and please God.
(In Io. Ev. XX, 11)