This is a book review written during the American Civil War, of a British work titled, Does the Bible Sanction American Slavery by a well known anti-imperialist of the time named Goldwin Smith (1823 - 1910).
"The Southern people tell us, that, under their training, the African has become a Christian. When they receive their runaway negroes, who are sent back to them in obedience to the law, as fellow-Christians, "not as servants, but as brothers beloved", the mission of St. Paul and his Master to both will be accomplished".
Similar article can be read here.