5 And if you please, let us try each by examples. For tell me, what was there ever more exalted than Abraham? And yet it was he that said, “I am but dust and ashes;” it was he who said, “Let there be no strife between me and you.” But this man, so humble, despised (“Persian,” i.e. perhaps, “of Elam.”) Persian spoils, and regarded not Barbaric trophies; and this he did of much highmindedness, and of a spirit nobly nurtured. For he is indeed exalted who is truly humble; (not the flatterer nor the dissembler;) for true greatness is one thing, and arrogance another. And this is plain from hence; if one man esteem clay to be clay, and despise it, and another admire the clay as gold, and account it a great thing; which, I ask, is the man of exalted mind? Is it not he who refuses to admire the clay? And which, abject and mean? Is it not he who admires it, and set much store by it? Just so do thou esteem of this case also; that he who calls himself but dust and ashes is exalted, although he say it out of humility; but that he who does not consider himself dust and ashes, but treats himself lovingly and has high thoughts, this man for his part must be counted mean, esteeming little things to be great. Whence it is clear that out of great loftiness of thought the patriarch spoke that saying, “I am but dust and ashes;” from loftiness of thought, not from arrogance.
For as in bodies it is one thing to be healthy and plump, (σφριγῶντα, firm and elastic.) and another thing to be swoln, although both indicate a full habit of flesh, (but in this case of unsound, in that of healthful flesh;) so also here: it is one thing to be arrogant, which is, as it were, to be swoln, and another thing to be high-souled, which is to be in a healthy state. And again, one man is tall from the stature of his person; another, being short, by adding buskins becomes taller; now tell me, which of the two should we call tall and large? Is it not quite plain, him whose height is from himself? For the other has it as something not his own; and stepping upon things low in themselves, turns out a tall person. Such is the case with many men who mount themselves up on wealth and glory; which is not exaltation, for he is exalted who wants none of these things, but despises them, and has his greatness from himself. Let us therefore become humble that we may become exalted; “For he that humbles himself shall be exalted.” Now the self-willed man is not such as this; rather he is of all characters the most ordinary. For the bubble, too, is inflated, but the inflation is not sound; wherefore we call these persons “puffed up.” Whereas the sober-minded man has no high thoughts, not even in high fortunes, knowing his own low estate; but the vulgar even in his trifling concerns indulges a proud fancy.
Source: Homilies on First Corinthians (New Advent)