If we transform our temporal projects into ends in themselves and blot out from our horizon our eternal dwelling place and the end for which we have been created, which is to love and praise the Lord and then to possess him for ever in Heaven, then our most brilliant endeavors turn traitor, and can even become a means of degrading our fellow creatures. Remember that sincere and well‑known exclamation of St Augustine, who had such bitter experience when God was unknown to him and he was seeking happiness outside God: 'You have made us for yourself, O Lord, and our hearts are restless till they rest in you!'...
In my case, and I wish the same to happen to you, the certainty I derive from feeling — from knowing — that I am a son of God fills me with real hope which, being a supernatural virtue, adapts to our nature when it is infused in us, and so is also a very human virtue. I am happy because I am certain we will attain Heaven if we remain faithful to the end; I rejoice in the thought of the bliss that will be ours, quoniam bonus , because my God is good and his mercy infinite. This conviction spurs me on to grasp that only those things that bear the imprint of God can display the indelible sign of eternity and have lasting value. Therefore, far from separating me from the things of this earth, hope draws me closer to these realities in a new way, a Christian way, which seeks to discover in everything the relation between our fallen nature and God, our Creator and Redeemer. (Friends of God, 208)
 St Augustine, Confessions, 1,1,1 (PL 32,661)
 Ps 105:1