Catholic Wisdom
"One day, someone said to Saint Aloysius Gonzaga that sanctity did not consist in outward penances and mortifications, but in the renunciation of self-will. He meekly replied in the words of the Gospel: 'These things you ought to have done, without neglecting the other' (Mt. 23:23). By this he meant to say that, although it is necessary to mortify the will, we must also mortify the body to keep it in check and to restore it to the order of reason."
—Saint Alphonsus di Liguori, Twelve Steps, 141.