33 Whereas, then, all Christians have to guard humility, forasmuch as it is from Christ that they are called Christians, Whose Gospel no one considers with care, but that he discovers Him to be a Teacher of humility; specially is it becoming that they be followers and keepers of this virtue, who excel the rest of men in any great good, in order that they may have a great care of that, which I set down in the beginning, “By how much you are great, by so much humble yourself in all things, and you shall find grace before God.” Wherefore, because perpetual Continence and specially virginity, is a great good in the Saints of God, they must with all watchfulness beware, that it be not corrupted with pride.
Source: On Holy Virginity (New Advent)