In my opinion, we shall never acquire true humility unless we raise our eyes to behold God. Looking upon His greatness, the soul sees better her own littleness; beholding His purity, she is the more aware of her own uncleanness; considering His patience, she feels how far she is from being patient; in fine, turning her glance upon the divine perfections, she discovers in herself so many imperfections that she would gladly close her eyes to them. -St. Teresa
This was, in truth, one of the principal fountains from which St. Vincent de Paul drew that humble opinion which he had of himself.
Here is one of the best means to acquire humility, — fix well in mind this maxim: One is as much as he is in the sight of God, and no more. -Thomas a Kempis
Text from A Year With the Saints (New York: P.J. Kenedy & Sons, 1891).