Unity between the colored and whites

Therefore strive earnestly and put forth your greatest endeavor toward the accomplishment of this fellowship and the cementing of this bond of brotherhood between you.
Such an attainment is not possible without will and effort on the part of each; from one, expressions of gratitude and appreciation; from the other kindliness and recognition of equality. Each one should endeavor to develop and assist the other toward mutual advancement.
This is possible only by conjoining of effort and inclination. Love and unity will be fostered between you, thereby bringing about the oneness of mankind.
For the accomplishment of unity between the colored and whites will be an assurance of the world’s peace. Then racial  prejudice, national prejudice, limited patriotism and religious bias will pass away and remain no longer.

Selected Writings of Abdu’l-Bahá P. 270