„I Thaddeus Kosciuszko being just in my departure from America do hereby declare and direct that should I make no other testamentary disposition of my property in the United States I hereby authorise my friend Thomas Jefferson to employ the whole thereof in purchasing Negroes from among his own or any others and giving them liberty in my name, in giving them an education in trades or otherwise and in having them instructed for their new condition in the duties of morality which may make them good neighbours, good fathers or mothers, husbands or wives and in their duties as citizens teaching them to be defenders of their liberty and Country and of the good order of society and in whatsoever may make them happy and useful and I make the said Thomas Jefferson my executor of this.“
— Tadeusz Kościuszko
T. Kosciuszko, 5th day of May 1798. (See The Papers of Thomas Jefferson, vol. 30, Princeton 2004, p. 332-333). Note: Thomas Jefferson never did carry out this request.