Laetitiae Sanctae §11

¹¹ The third evil for which a remedy is needed is one which is chiefly characteristic of the times in which we live. Men in former ages, although they loved the world, and loved it far too well, did not usually aggravate their sinful attachment to the things of earth by a contempt of the things of heaven. Even the right-thinking portion of the pagan world recognized that this life was not a home but a dwelling-place, not our destination, but a stage in the journey. But men of our day, albeit they have had the advantages of Christian instruction, pursue the false goods of this world in such wise that the thought of their true Fatherland of enduring happiness is not only set aside, but, to their shame be it said, banished and entirely erased from their memory, notwithstanding the warning of St. Paul, "We have not here a lasting city, but we seek one which is to come" ( Heb . xiii., 4).