Gregory the Great — as excerpted in the Catena Aurea on Matthew 25:14-30

“(ubi sup.) There are also some who though they cannot pierce to things inward and mystical, yet for their measure of view of their heavenly country they teach rightly such things as they can, what they have gathered from things without, and while they keep themselves from wantonness of the flesh, and from ambition of earthly things, and from the delights of the things that are seen, they restrain others also from the same by their admonitions.”