46 Peoples and individuals aspire to be free: their search for full development signals their desire to overcome the many obstacles preventing them from enjoying a "more human life." Recently, in the period following the publication of the encyclical Populorum Progressio, a new way of confronting the problems of poverty and underdevelopment has spread in some areas of the world, especially in Latin America. This approach makes liberation the fundamental category and the first principle of action. The positive values, as well as the deviations and risks of deviation, which are damaging to the faith and are connected with this form of theological reflection and method, have been appropriately pointed out by the Church's Magisterium. It is fitting to add that the aspiration to freedom from all forms of slavery affecting the individual and society is something noble and legitimate. This in fact is the purpose of development, or rather liberation and development, taking into account the intimate connection between the two. Development which is merely economic is incapable of setting man free, on the contrary, it will end by enslaving him further. Development that does not include the cultural, transcendent and religious dimensions of man and society, to the extent that it does not recognize the existence of such dimensions and does not endeavor to direct its goals and priorities toward the same, is even less conducive to authentic liberation. Human beings are totally free only when they are completely themselves, in the fullness of their rights and duties. The same can be said about society as a whole. The principal obstacle to be overcome on the way to authentic liberation is sin and the structures produced by sin as it multiplies and spreads. The freedom with which Christ has set us free (cf. Gal 5:1) encourages us to become the servants of all. Thus the process of development and liberation takes concrete shape in the exercise of solidarity, that is to say in the love and service of neighbor, especially of the poorest: "For where truth and love are missing, the process of liberation results in the death of a freedom which will have lost all support."
Source: Sollicitudo Rei Socialis (Vatican.va)