To abolish a status, which in all ages God has sanctioned, and man has continued, would not only be robbery to an innumerable class of our fellow-subjects; but it would be extreme cruelty to the African Savages, a portion of whom it saves from massacre, or intolerable bondage in their own country, and introduces into a much happier state of life; especially now when their passage to the West-Indies and their treatment there is humanely regulated.
James Boswell (1874). “The Life of Samuel Johnson, LL.D.: Together with A Journal of a Tour to the Hebrides”, p.239