Gregory the Great, on Ezek 40:16

“And slanting windows in the little chambers, and in their fronts, which were within the gate on every side round about: and in like, manner there wore also in the porches windows round about within, and before the fronts the representation of palm trees.”

“And oblique windows in the chambers. In slanted windows, the part through which light enters is narrow, but the interior part which receives the light is wide, because the minds of those who contemplate, although they may see something slight of the true light, are nevertheless expanded within themselves with great amplitude. And indeed these minds can scarcely grasp even a few of the things they behold. For truly what those contemplating see of eternity is exceedingly small, yet from this small amount the bosom of their minds is enlarged into an increase of fervor and love; and hence they become spacious within themselves, from whence they admit the light of truth to themselves as if through narrow openings. Because this greatness of contemplation can be granted only to those who love, slanted windows are said to be in the chambers, or in those things which are said to be near the chambers, no longer on the outside but on the inside.”

Imported from an open dataset — not yet checked against the printed edition.