As bishops of some of the peoples who are striving to develop, we endorse the anxious appeal of Pope Paul VI in his letter ‘Populorum progressio’, so as to define their duties for our priests and faithful, and to send words of encouragement to all our brothers in the Third World.As they are in this Third World, our Churches are caught up in a confrontation no longer simply of East and West, but of three great groups: the western powers which grew rich in the last century, the two Communist countries that have also become great powers, and finally the Third World, still seeking an escape from the domination of the great powers, and the freedom to develop in their own way. Within even the developed countries there are still classes, races and peoples that have not yet received their rights to a full human life. An irresistible urge is working these poorer elements towards their betterment by liberating them from all oppressive forces. Although most countries may have gained their political freedom, economic freedom is still a rarity. Few also are countries where social equality prevails, an essential condition of true brotherhood, for peace cannot exist without justice. The peoples of the Third World are the proletariat of existing humanity, exploited by the great, their very survival threatened by ones who, because they are stronger, arrogate to themselves the sole right to judge and police peoples less rich in material terms. In fact our peoples are no less wise or just than the great powers.