The Preamble

The preamble to the Treaty provides:

We the peoples of the United Nations

To save future generations from the scourge of war that twice in our lives has brought unspeakable pain to mankind, and
To reaffirm faith in fundamental rights, the dignity and worth of the human person, the equal rights of men and women, and nations, large and small, and
To establish the conditions under which justice and the observance of treaty obligations and other sources of international law may be maintained, and
To promote social progress and to improve living conditions in greater freedom;

And for these purposes

To practice tolerance, to live in peace with good neighborliness, and
To join forces to maintain international peace and security, and
To ensure, through the acceptance of principles and the establishment of methods, that armed force should not be used except in the common interest and
To resort to international institutions for the promotion of economic and social progress of all peoples,
They decided to combine our efforts to achieve these objectives.
Accordingly, our respective Governments, through their representatives in the city of San Francisco, who have presented their full powers, found in good and due form, have agreed to the present Charter of the United Nations and hereby establish International organization to be known as United Nations.

Although the Preamble is an integral part of the Charter, it does not state any of the rights and obligations of the Member States; Its purpose is to serve as a guide to the interpretation of the provisions of the Charter by highlighting some of the main reasons for the founders of the organization.