St. Bernard of Clairvaux

“To define humility:  Humility is a virtue by which a man has a low opinion of himself because he knows himself well.  This is the virtue that belongs to those who have set their hearts to the climb and have gone from virtue to virtue, from step to step, until they reached the highest peak of humility and gazed upon truth from the watch-tower of Zion.”

Source: St. Bernard of Clairvaux, The Steps of Humility and Pride

(Note: This quote was incorrectly attributed to St. Augustine when it was initially posted here.)