44 Next let not man, now that he knows that by the grace of God he is what he is, fall into another snare of pride, so as by lifting up himself for the very grace of God to despise the rest. By which fault that other Pharisee both gave thanks unto God for the goods which he had, and yet vaunted himself above the Publican confessing his sins. What therefore should a virgin do, what should she think, that she vaunt not herself above those, men or women, who have not this so great gift? For she ought not to feign humility, but to set it forth: for the feigning of humility is greater pride. Wherefore Scripture wishing to show that humility ought to be true, after having said, “By how much you are great, by so much humble yourself in all things,” added soon after, “And you shall find grace before God:” assuredly where one could not humble one's self deceitfully.
Source: On Holy Virginity (New Advent)