William Garden Blaikie,
The Personal Life of David Livingstone…
“ It was Livingstone's great joy to begin this long journey with a blessed act of humanity, boldly summoning a trader to release a body of captives, so that no fewer than eighteen souls were restored to freedom. As he proceeded he obtained but too plain evidence of the extent to which the slave traffic prevailed, uniformly finding that wherever slavers had been, the natives were more difficult to deal with and more exorbitant in their demands. ”
