It is quite legitimate for nations to treat those differences as a sacred inheritance and guard them at all costs. The Church aims at unity, a unity determined and kept alive by that supernatural love which should be actuating everybody; she does not aim at a uniformity which would only be external in its effects and would cramp the natural tendencies of the nations concerned. Every nation has its own genius, its own qualities, springing from the hidden roots of its being. The wise development, the encouragement within limits, of that genius, those qualities, does no harm; and if a nation cares to take precautions, to lay down rules, for that end, it has the Church's approval. She is mother enough to befriend such projects with her prayers provided that they are not opposed to the duties incumbent on men from their common origin and shared destiny. (Papal Encyclical, Mater et Magistra, 15 May 1961)
The Encyclopedia of World Problems and Human Potential is a collaboration between UIA and Mankind 2000, started in 1972. It is the result of an ambitious effort to collect and present information on the problems with which humanity is confronted, as well as the challenges such problems pose to concept formation, values and development strategies. Problems included are those identified in international periodicals but especially in the documents of some 60,000 international non-profit organizations, profiled in the Yearbook of International Organizations.
The Encyclopedia includes problems which such groups choose to perceive and act upon, whether or not their existence is denied by others claiming greater expertise. Indeed such claims and counter-claims figure in many of the problem descriptions in order to reflect the often paralyzing dynamics of international debate. In the light of the interdependence demonstrated among world problems in every sector, emphasis is placed on the need for approaches which are sufficiently complex to encompass the factions, conflicts and rival worldviews that undermine collective initiative towards a promising future.
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