32 The obligation to commit oneself to the development of peoples is not just an individual duty, and still less an individualistic one, as if it were possible to achieve this development through the isolated efforts of each individual. It is an imperative which obliges each and every man and woman, as well as societies and nations. In particular, it obliges the Catholic Church and the other Churches and Ecclesial Communities, with which we are completely willing to collaborate in this field. In this sense, just as we Catholics invite our Christian brethren to share in our initiatives, so too we declare that we are ready to collaborate in theirs, and we welcome the invitations presented to us. In this pursuit of integral human development we can also do much with the members of other religions, as in fact is being done in various places. Collaboration in the development of the whole person and of every human being is in fact a duty of all towards all, and must be shared by the four parts of the world: East and West, North and South; or, as we say today, by the different "worlds." If, on the contrary, people try to achieve it in only one part, or in only one world, they do so at the expense of the others; and, precisely because the others are ignored, their own development becomes exaggerated and misdirected. Peoples or nations too have a right to their own full development, which while including - as already said - the economic and social aspects, should also include individual cultural identity and openness to the transcendent. Not even the need for development can be used as an excuse for imposing on others one's own way of life or own religious belief.
Source: Sollicitudo Rei Socialis (Vatican.va)