If the white people retain a resolution to prefer their outward prospects of gain to all other considerations, and do not act conscientiously toward [slaves] as fellow-creatures, I believe that burden will grow heavier and heavier, until times change in a way disagreeable to us.
The Journal of John Woolman Exemplifies the inner life of the Society of Friends and the first crusade against slavery in the Americas. From the Harvard Classics, Vol. I, Part 2.