Verily the words which have descended from the heaven of the Will of God are the source of unity and harmony for the world. Close your eyes to racial differences and welcome all with the light of oneness.
Baha'u'llah, translated by Shoghi Effendi and published in Advent of Divine Justice.
This is a beautiful assembly. I am very happy that white and black are together. This is the cause of my happiness, for you all are the servants of one God and, therefore, brothers, sisters, mothers and fathers. In the sight of God there is no distinction between whites and blacks; all are as one. Anyone whose heart is pure is dear to God—whether white or black, red or yellow. Among the animals colors exist. The doves are white, black, red, blue; but notwithstanding this diversity of color they flock together in unity, happiness and fellowship, making no distinction among themselves, for they are all doves. Man is intelligent and thoughtful, endowed with powers of mind. Why, then, should he be influenced by distinction of color or race, since all belong to one human family? There is no sheep which shuns another as if saying, “I am white, and you are black.” They graze together in complete unity, live together in fellowship and happiness. How then can man be limited and influenced by racial colors? The important thing is to realize that all are human, all are one progeny of Adam. Inasmuch as they are all one family, why should they be separated?
'Abdu'l-Baha, The Promulgation of Universal Peace, Nov. 10, 1912, New York City
As to racial prejudice, the corrosion of which, for well-nigh a century, has bitten into the fiber, and attacked the whole social structure of American society, it should be regarded as constituting the most vital and challenging issue confronting the Bahá’í community at the present stage of its evolution. The ceaseless exertions which this issue of paramount importance calls for, the sacrifices it must impose, the care and vigilance it demands, the moral courage and fortitude it requires, the tact and sympathy it necessitates, invest this problem, which the American believers are still far from having satisfactorily resolved, with an urgency and importance that cannot be overestimated. White and Negro, high and low, young and old, whether newly converted to the Faith or not, all who stand identified with it must participate in, and lend their assistance, each according to his or her capacity, experience, and opportunities, to the common task of fulfilling the instructions, realizing the hopes, and following the example, of ‘Abdu’l-Bahá. Whether colored or noncolored, neither race has the right, or can conscientiously claim, to be regarded as absolved from such an obligation, as having realized such hopes, or having faithfully followed such an example. A long and thorny road, beset with pitfalls, still remains untraveled, both by the white and the Negro exponents of the redeeming Faith of Bahá’u’lláh. On the distance they cover, and the manner in which they travel that road, must depend, to an extent which few among them can imagine, the operation of those intangible influences which are indispensable to the spiritual triumph of the American believers and the material success of their newly launched enterprise.
Shoghi Effendi, The Advent of Divine Justice , p. 51 (circa 1930s)