Such a tendency has the slave-trade to debauch men's minds, and harden them to every feeling of humanity! For I will not suppose that the dealers in slaves are born worse than other men—No; it is the fatality of this mistaken avarice, that it corrupts the milk of human kindness and turns it into gall. And, had the pursuits of those men been different, they might have been as generous, as tender-hearted and just, as they are unfeeling, rapacious and cruel. Surely this traffic cannot be good, which spreads like a pestilence, and taints what it touches! which violates that first natural right of mankind, equality and independency, and gives one man a dominion over his fellows which God could never intend! For it raises the owner to a state as far above man as it depresses the slave below it; and, with all the presumption of human pride, sets a distinction between them, immeasurable in extent, and endless in duration! Yet how mistaken is the avarice even of the planters? Are slaves more useful by being thus humbled to the condition of brutes, than they would be if suffered to enjoy the privileges of men? The freedom which diffuses health and prosperity throughout Britain answers you—No. When you make men slaves you deprive them of half their virtue, you set them in your own conduct an example of fraud, rapine, and cruelty, and compel them to live with you in a state of war; and yet you complain that they are not honest or faithful! You stupify them with stripes, and think it necessary to keep them in a state of ignorance; and yet you assert that they are incapable of learning; that their minds are such a barren soil or moor, that culture would be lost on them; and that they come from a climate, where nature, though prodigal of her bounties in a degree unknown to yourselves, has left man alone scant and unfinished, and incapable of enjoying the treasures she has poured out for him!—An assertion at once impious and absurd. Why do you use those instruments of torture? Are they fit to be applied by one rational being to another? And are ye not struck with shame and mortification, to see the partakers of your nature reduced so low? But, above all, are there no dangers attending this mode of treatment? Are you not hourly in dread of an insurrection? [...] But by changing your conduct, and treating your slaves as men, every cause of fear would be banished. They would be faithful, honest, intelligent and vigorous; and peace, prosperity, and happiness, would attend you.

The turpitude, the inhumanity, the cruelty, and the infamy of the African commerce in slaves, have been so impressively represented to the public by the highest powers of eloquence, that nothing that I can say would increase the just odium in which it is and ought to be held. Every measure of prudence, therefore, ought to be assumed for the eventual total extirpation of slavery from the United States.

The Managers of that Trade themselves, and others, testify, that many of these African nations inhabit fertile countries, are industrious farmers, enjoy plenty, and lived quietly, averse to war, before the Europeans debauched them with liquors, and bribing them against one another; and that these inoffensive people are brought into slavery, by stealing them, tempting Kings to sell subjects, which they can have no right to do, and hiring one tribe to war against another, in order to catch prisoners. By such wicked and inhuman ways the English are said to enslave towards one hundred thousand yearly; of which thirty thousand are supposed to die by barbarous treatment in the first year; besides all that are slain in the unnatural wars excited to take them. So much innocent blood have the Managers and Supporters of this inhuman Trade to answer for to the common Lord of all!