“It is not possible to take great pleasure in anything without becoming attached to it. If you lose property, and find yourself grievously afflicted at the loss of it, you may be sure that you were warmly attached to it; there is no surer proof of affection for the thing that is lost than our sorrow at its loss.
Therefore, do not fix your longings on anything which you do not possess; do not let your heart rest in that which you have; do not grieve over much at the losses which happen to you; and then you may reasonably believe that although rich in fact, you are not so in affection, but that you are poor in spirit, and therefore blessed, for the Kingdom of Heaven is yours (Matthew 5:3).”
Frances de Sales in Introduction to the Devout Life (New York: Random House, 2002) 122.