6 Today we see men trying to secure a sure food supply, cures for diseases, and steady employment. We see them trying to eliminate every ill, to remove every obstacle which offends man's dignity. They are continually striving to exercise greater personal responsibility; to do more, learn more, and have more so that they might increase their personal worth. And yet, at the same time, a large number of them live amid conditions which frustrate these legitimate desires. Moreover, those nations which have recently gained independence find that political freedom is not enough. They must also acquire the social and economic structures and processes that accord with man's nature and activity, if their citizens are to achieve personal growth and if their country is to take its rightful place in the international community.
Source: Populorum Progressio (Vatican.va)