“Beware that you be not deceived by self-love, for sometimes it counterfeits the Love of God so cleverly that you may mistake one for the other. To avoid this, and to prevent a due care for your temporal interests from degenerating into avarice, it is needful often to practice a real poverty amid the riches with which God has endowed you.”
Source: St. Francis de Sales, Introduction to the Devout Life, Random House, Inc., 2002.