Cooperation with other believers

109. 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 person. It is a responsibility 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 Catholics are willing to cooperate in this field.213 In this sense, just as Catholics invite their Christian brothers and sisters to share in their initiatives, so, when they accept invitations offered to them, Catholics show that they are ready to cooperate in projects undertaken by other Christians. In the promotion of integral human development Catholics can also cooperate with the believers of other religions, as in fact they are already doing in various places.214