Wesley now appeals to the Natural Law, beloved of Catholic moral theology, as opposed to human law.
The grand plea is, “They are authorized by law.” But can law, human law, change the nature of things? Can it turn darkness into light, or evil into good? By no means. Notwithstanding ten thousand laws, right is right, and wrong is wrong still. There must still remain an essential difference between justice and injustice, cruelty and mercy. So that I still ask, Who can reconcile this treatment of the Negroes, first and last, with either mercy or justice?
Where is the justice of inflicting the severest evils on those that have done us no wrong? of depriving those that never injured us in word or deed, of every comfort of life? of tearing them from their native country, and depriving them of liberty itself, to which an Angolan has the same natural right as an Englishman, and on which he sets as high a value? Yea, where is the justice of taking away the lives of innocent, inoffensive men; murdering thousands of them in their own land, by the hands of their own countrymen; many thousands, year after year, on shipboard, and then casting them like dung into the sea; and tens of thousands in that cruel slavery to which they are so unjustly reduced?
But waving, for the present, all other considerations, I strike at the root of this complicated villainy; I absolutely deny all slave-holding to be consistent with any degree of natural justice.