John Wesley

I deny that villany is ever necessary. It is impossible that it should ever be necessary for any reasonable creature to violate all the laws of justice, mercy, and truth. No circumstances can make it necessary for a man to burst in sunder all the ties of humanity. It can never be necessary for a rational being to sink himself below a brute. A man can be under no necessity of degrading himself into a wolf. The absurdity of the supposition is so glaring, that one would wonder any one can help seeing it.

John Wesley, Thoughts Upon Slavery (1774).