24 Thus while an unbridled longing for the things of this earth has penetrated into the hearts of mortals and each one more ardently longs for the short-lived riches and ephemeral pleasures, all feel a fruitful call back to the heavenly treasures "where thieves do not break in and neither rust nor moth doth consume" ( Matt . xii, 33), and to the wealth that will never perish.
Source: Ingravescentibus Malis (Vatican.va)