“It is one thing to be delivered from bad thoughts, and another to be freed from the passions. Often people are delivered from thoughts, when they do not have before their eyes those things which produce passion. But the passions for them remain hidden in the soul, and when the things appear again the passions are revealed. Therefore, it is necessary to guard the mind when these things appear, and to know toward which things you have a passion.”

– St. Maximus the Confessor