Evolución de las teorías de la justicia con respecto a los derechos humanos ya formulados y a los futuros derechos

theories of justice showing its possibilities and limits are analyzed; moderate liberal thought is completed together with some conceptions which give an important place to cultural and economic inequalities. it is stated that if the principle of difference could be developed with the principles of equality and liberty, systems with more justice could be achieved. the theoretic conceptions about the subject changed in the last years; nowadays a theory of justice is being developed which wants to put together almost all the universality lying in the thought of human rights, emphasizing the cultural diversity of peoples.