Differently to be admonished are the humble and the haughty.
To the former it is to be insinuated how true is that excellence which they hold in hoping for it.
To the latter it is to be intimated how that temporal glory is as nothing which, even when embracing it, they hold not.
Let the humble hear how eternal are the things that they long for, how transitory the things which they despise.
Let the haughty hear how transitory are the things they court, how eternal the things they lose.
[…] The pride…of the devil became the occasion of our perdition, and the humility of God has been found the argument for our redemption.
For our enemy, having been created among all things, desired to appear exalted above all things.
But our Redeemer, remaining great above all things, deigned to become little among all things.
Let the humble, then, be told that, when they abase themselves, they ascend to the likeness of God.
Let the haughty be told that, when they exalt themselves, they fall into imitation of the apostate angel.
What, then, is more debased than haughtiness, which, while it stretches itself above itself, is lengthened out beyond the stature of true loftiness?
And what is more sublime than humility, which, while it depresses itself to the lowest, conjoins itself to its Maker who remains above the highest?
There is, however, another thing in these cases that ought to be carefully considered; that some are often deceived by a false show of humility, while some are beguiled by ignorance of their own haughtiness.
For commonly some who think themselves humble have an admixture of fear, such as is not due to men; while an assertion of free speech commonly goes with the haughty.
And when any vices require to be rebuked, the former hold their peace out of fear, and yet esteem themselves as being silent out of humility; the latter speak in the impatience of haughtiness, and yet believe themselves to be speaking in the freedom of uprightness.
Those the fault of timidity under a show of humility keeps back from rebuking what is wrong; these the unbridled impetuosity of pride, under the image of freedom, impels to rebuke things they ought not, or to rebuke them more than they ought.
Whence both the haughty are to be admonished not to be free more than is becoming, and the humble are to be admonished not to be more submissive than is right; lest either the former turn the defence of righteousness into a display of pride, or the latter, while they study more than needs to submit themselves to men, be driven even to pay respect to their vices.
Gregory the Great (c.540-604): Pastoral Rule, 3, 17.