9 The sons of peace remember death; and they forsake and remove from them wrath and enmity. As sojourners they dwell in this world, and prepare for themselves a provision for the journey before them. On that which is above they set their thoughts, on that which is above they meditate; and those things which are beneath their eyes they despise. They send away their treasures to the place where there is no peril, the place where there is no moth, nor are there thieves.
They abide in the world as aliens, sons of a far land; and look forward to be sent out of this world and to come to the city, the place of the righteous. They afflict themselves in the place of their sojourning; and they are not entangled or occupied in the house of their exile. Ever day by day their faces are set upwards, to go to the repose of their fathers. As prisoners are they in this world, and as hostages of the King are they kept. To the end they have no rest in this world, nor is (their) hope in it, that it will continue for ever.
They that acquire possessions, rejoice not in them, and they that beget children, death fills them with sorrow. They that build cities, shall not be left in them; and those that hasten and toil for anything, are in no wise to be distinguished from fools. O man without sense, whosoever he be whose trust is in this world!
Source: Demonstrations (New Advent)