4 I am convinced that the teachings of the Encyclical Populorum Progressio , addressed to the people and the society of the '60s, retain all their force as an appeal to conscience today in the last part of the '80s, in an effort to trace the major lines of the present world always within the context of the aim and inspiration of the "development of peoples," which are still very far from being exhausted. I therefore propose to extend the impact of that message by bringing it to bear, with its possible applications, upon the present historical moment, which is no less dramatic than that of twenty years ago. As we well know, time maintains a constant and unchanging rhythm. Today however we have the impression that it is passing ever more quickly, especially by reason of the multiplication and complexity of the phenomena in the midst of which we live. Consequently, the configuration of the world in the course of the last twenty years, while preserving certain fundamental constants, has undergone notable changes and presents some totally new aspects. The present period of time, on the eve of the third Christian millennium, is characterized by a widespread expectancy, rather like a new "Advent," which to some extent touches everyone. It offers an opportunity to study the teachings of the Encyclical in greater detail and to see their possible future developments. The aim of the present reflection is to emphasize, through a theological investigation of the present world, the need for a fuller and more nuanced concept of development, according to the suggestions contained in the Encyclical. Its aim is also to indicate some ways of putting it into effect.
Source: Sollicitudo Rei Socialis (Vatican.va)