Haile Selassie's 10/04/1963 speech (in part) as per Wikipedia
(Text is available under the Creative Commons Attribution-ShareAlike License)

Last May, in Addis Ababa, I convened a meeting of Heads of African States and Governments. In three days, the thirty-two nations represented at that Conference demonstrated to the world that when the will and the determination exist, nations and peoples of diverse backgrounds can and will work together. In unity, to the achievement of common goals and the assurance of that equality and brotherhood which we desire. On the question of racial discrimination, the Addis Ababa Conference taught, to those who will learn, this further lesson:

That until the philosophy which holds one race superior and another inferior is finally and permanently discredited and abandoned; That until there are no longer first-class and second-class citizens of any nation; That until the color of a man's skin is of no more significance than the color of his eyes; That until the basic human rights are equally guaranteed to all without regard to race; That until that day, the dream of lasting peace and world citizenship and the rule of international morality will remain but a fleeting illusion, to be pursued but never attained; And until the ignoble and unhappy regimes that hold our brothers in Angola, in Mozambique and in South Africa in subhuman bondage have been toppled and destroyed; Until bigotry and prejudice and malicious and inhuman self-interest have been replaced by understanding and tolerance and good-will; Until all Africans stand and speak as free beings, equal in the eyes of all men, as they are in the eyes of Heaven; Until that day, the African continent will not know peace. We Africans will fight, if necessary, and we know that we shall win, as we are confident in the victory of good over evil.

The basis of racial discrimination and colonialism has been economic, and it is with economic weapons that these evils have been and can be overcome. In pursuance of resolutions adopted at the Addis Ababa summit conference, African states have undertaken certain measures in the economic field which, if adopted by all member states of the United Nations, would soon reduce intransigeance to reason. I ask, today, for adherence to these measures by every nation represented [here] which is truly devoted to the principles enunciated in the charter.

We must act while we can, while the occasion exists to exert those legitimate pressures available to us lest time run out and resort be had to less happy means.

The great nations of the world would do well to remember that in the modern age even their own fates are not wholly in their hands. Peace demands the united efforts of us all. Who can foresee what spark might ignite the fuse?

The stake of each one of us is identical-life or death. We all wish to live. We all seek a world in which men are freed of the burdens of ignorance, poverty, hunger and disease. And we shall all be hard-pressed to escape the deadly rain of nuclear fall-out should catastrophe overtake us.

The problems which confront us today are, equally, unprecedented. They have no counterparts in human experience. Men search the pages of history for solutions, for precedents, but there are none. This then, is the ultimate challenge. Where are we to look for our survival, for the answers to the questions which have never before been posed? We must look, first, to the Almighty God, Who has raised man above the animals and endowed him with intelligence and reason. We must put our faith in Him, that He will not desert us or permit us to destroy humanity which He created in His image.

And we must look into ourselves, into the depth of our souls. We must become something we have never been and for which our education and experience and environment have ill-prepared us. We must become bigger than we have been : more courageous, greater in spirit, larger in outlook. We must become members of a new race, overcoming petty prejudice, owing our ultimate allegiance not to nations but to our fellow men within the human community.

(The Addis Ababa summit conference referred to was, I believe, that of May 25, 1963, which established The Organisation of African Unity (OAU)