Wilberforce spent some forty years working for the Abolition of Slavery, which was achieved in the United Kingdom in 1833. In the previous century, Samuel Johnson was a prominent figure against the trade and the institution of slavery, as recorded here by James Boswell.
In 1756 he described Jamaica as ‘a place of great wealth and dreadful wickedness, a den of tyrants and a dungeon of slaves.’ In 1759 he wrote:—’Of black men the numbers are too great who are now repining under English cruelty.’ In the same year, in describing the cruelty of the Portuguese discoverers, he said:—’We are openly told that they had the less scruple concerning their treatment of the savage people, because they scarcely considered them as distinct from beasts; and indeed, the practice of all the European nations, and among others of the English barbarians that cultivate the southern islands of America, proves that this opinion, however absurd and foolish, however wicked and injurious, still continues to prevail. Interest and pride harden the heart, and it is in vain to dispute against avarice and power.’
No miserable sophistry could convince him, with his clear mind and his ardour for liberty, that slavery can be right. ‘An individual,’ he wrote, ‘may, indeed, forfeit his liberty by a crime; but he cannot by that crime forfeit the liberty of his children.’ How deeply he felt for the wrongs done to helpless races is shown in his dread of discoverers. No man had a more eager curiosity, or more longed that the bounds of knowledge should be enlarged. Yet he wrote:—’I do not much wish well to discoveries, for I am always afraid they will end in conquest and robbery.’
Life of Johnson, Volume 2 1765-1776″ by James Boswell, via Kindle