If there were structures which could irrevocably guarantee a determined—good—state of the world, man’s freedom would be denied, and hence they would not be good structures at all. What this means is that every generation has the task of engaging anew in the arduous search for the right way to order human affairs; this task is never simply completed. Yet every generation must also make its own contribution to establishing convincing structures of freedom and of good, which can help the following generation as a guideline for the proper use of human freedom; hence, always within human limits, they provide a certain guarantee also for the future. In other words: good structures help, but of themselves they are not enough. Man can never be redeemed simply from outside.