St. Paul of the Cross: Thoughts on Mortification

"I wish, however that your instruments of penance be great humility of heart...what a fine foundation this is to build a high edifice of sanctity! Above all, be mortified in your opinions, especially with your tongue and yes, keeping them well guarded. A true servant of God...goes always recollected in God in the company of Jesus Christ. Pay attention to mortification of your passions, especially when you feel resentment. Keep silent, never complain, do not justify yourself ever, and never harbor resentment." (From a letter of Saint Paul of the Cross to Teresa Palozzi December 7, 1755)