But one of the principal imperatives of the common good is the recognition of the moral order and the unfailing observance of its precepts. "A firmly established order between political communities must be founded on the unshakable and unmoving rock of the moral law, that law which is revealed in the order of nature by the Creator Himself, and engraved indelibly on men's hearts . . . Its principles are beacon lights to guide the policies of men and nations. They are also warning lights—providential signs—which men must heed if their laborious efforts to establish a new order are not to encounter perilous storms and shipwreck." 54Cf. Pius XII's broadcast message, Christmas 1941, AAS 34 (1942) 16.
The first point to be settled is that mutual ties between States must be governed by truth. Truth calls for the elimination of every trace of racial discrimination, and the consequent recognition of the inviolable principle that all States are by nature equal in dignity. Each of them accordingly has the right to exist, to develop, and to possess the necessary means and accept a primary responsibility for its own development. Each is also legitimately entitled to its good name and to the respect which is its due.
As we know from experience, men frequently differ widely in knowledge, virtue, intelligence and wealth, but that is no valid argument in favor of a system whereby those who are in a position of superiority impose their will arbitrarily on others. On the contrary, such men have a greater share in the common responsibility to help others to reach perfection by their mutual efforts.
So, too, on the international level: some nations may have attained to a superior degree of scientific, cultural and economic development. But that does not entitle them to exert unjust political domination over other nations. It means that they have to make a greater contribution to the common cause of social progress.