Why may it not succeed with the man of color?

[Here is a letter I wrote to Frances Wright on August 7, 1825:]

My own health is very low, not having been able to leave the house for three months, and suffering much at times. In this state of body and mind, your letter could not have found a more inefficient counsellor, one scarcely able to think or to write. At the age of eighty-two, with one foot in the grave, and the other uplifted to follow it, I do not permit myself to take part in any new enterprises, even for bettering the condition of man, not even in the great one which is the subject of your letter, and which has been through life that of my greatest anxieties. The march of events has not been such as to render its completion practicable within the limits of time allotted to me; and I leave its accomplishment as the work of another generation. And I am cheered when I see that on which it is devolved, taking it up with so much good will, and such minds engaged in its encouragement. The abolition of the evil is not impossible; it ought never therefore to be despaired of. Every plan should be adopted, every experiment tried, which may do something towards the ultimate object. That which you propose is well worthy of trial. It has succeeded with certain portions of our white brethren, under the care of a Rapp and an Owen; and why may it not succeed with the man of color?