Slavery! cursed slavery! what crimes has it invoked! and, oh! what retribution has a righteous God visited upon these traders in human flesh! The rivers of tears shed by us helpless ones, in captivity, were turned to lakes of blood! How often have we cried in our anguish, "Oh! Lord, how long, how long?"

From the Darkness Cometh the Light, or, Struggles for Freedom [1890s]