30 Let us summarize what has emerged so far in the course of our reflections. Day by day, man experiences many greater or lesser hopes, different in kind according to the different periods of his life. Sometimes one of these hopes may appear to be totally satisfying without any need for other hopes. Young people can have the hope of a great and fully satisfying love; the hope of a certain position in their profession, or of some success that will prove decisive for the rest of their lives. When these hopes are fulfilled, however, it becomes clear that they were not, in reality, the whole. It becomes evident that man has need of a hope that goes further. It becomes clear that only something infinite will suffice for him, something that will always be more than he can ever attain. In this regard our contemporary age has developed the hope of creating a perfect world that, thanks to scientific knowledge and to scientifically based politics, seemed to be achievable. Thus Biblical hope in the Kingdom of God has been displaced by hope in the kingdom of man, the hope of a better world which would be the real “Kingdom of God”. This seemed at last to be the great and realistic hope that man needs. It was capable of galvanizing—for a time—all man's energies. The great objective seemed worthy of full commitment. In the course of time, however, it has become clear that this hope is constantly receding. Above all it has become apparent that this may be a hope for a future generation, but not for me. And however much “for all” may be part of the great hope—since I cannot be happy without others or in opposition to them—it remains true that a hope that does not concern me personally is not a real hope. It has also become clear that this hope is opposed to freedom, since human affairs depend in each generation on the free decisions of those concerned. If this freedom were to be taken away, as a result of certain conditions or structures, then ultimately this world would not be good, since a world without freedom can by no means be a good world. Hence, while we must always be committed to the improvement of the world, tomorrow's better world cannot be the proper and sufficient content of our hope. And in this regard the question always arises: when is the world “better”? What makes it good? By what standard are we to judge its goodness? What are the paths that lead to this “goodness”?
Source: Spe Salvi (Vatican.va)