A dissuasion to Great-Britain and the colonies, from the slave trade to Africa

In Short

This work is a forceful, early moral appeal written to persuade Great Britain and its American colonies to abandon the slave trade. By synthesizing religious mandates, legal arguments based on colonial charters, and economic logic, the author systematically dismantles the justifications used by slave traders. It serves as a historical record of the abolitionist sentiment growing in the late 18th century. The book remains vital for its unflinching documentation of the inherent cruelty of the trade and its attempt to propose a future built on humane, equitable commerce.

The Story

The narrative begins with a dedicated appeal to the "friends of liberty." Acknowledging his own background as a native of Great Britain, the author sets aside national prejudices to address the "common cause of liberty." He frames his argument not merely as a political stance, but as a moral necessity, asserting that his primary motivation is the welfare of all fellow creatures. He admits that while many have written on this subject before, his intent is to provide a comprehensive, undeniable case that leaves no room for justification of the status quo.

The arc of the argument moves from the divine to the practical. First, the author invokes the laws of God, citing Mosaic law to characterize the slave trade as a form of "man-stealing." He argues that those who steal and sell men—and those who facilitate this trade—are violating the most sacred commandments. He recounts harrowing reports from surgeons on slave ships, documenting the extreme violence used to subdue captives, including forced cannibalism and torture. By detailing these atrocities, he moves the reader from abstract morality to the visceral reality of human suffering, insisting that such cruelty is the natural, inevitable outcome of a system built on greed.

Moving beyond religious doctrine, the author turns to the "law of nature." He challenges the reader to consider the Golden Rule: would any person consent to be torn from their family and enslaved for life? He asserts that the desire for liberty is universal, and that those who deny it to others are acting in total defiance of reason. He then pivots to a specific legal argument, citing the colonial Charter of his own province, which guaranteed the rights of free subjects to all inhabitants. He argues that keeping people enslaved is a direct betrayal of these foundational legal promises.

The final phase of the argument addresses the economic reality. The author contends that the slave trade is not only inhumane but also disadvantageous to the nations that participate in it. He paints a portrait of Africa as a land of immense commercial potential, rich in rivers and resources, which could be better cultivated through "Christian-like" trade. He argues that the obsession with the slave trade blinds merchants to more profitable, sustainable avenues of commerce. He concludes by proposing a "just and lawful footing" for future relations with Africa, imagining a system where trade is based on mutual benefit rather than exploitation. He ends with a final, desperate warning: those who persist in this trade, despite the overwhelming evidence of its wickedness, are "treasuring up fountains of wrath" and inviting divine judgment upon themselves.

How It Unfolds

The moral foundation The author establishes that slavery is an explicit violation of divine law and the teachings of the Bible. He maintains that the trade is a systemic form of theft that invites spiritual ruin for both the individual merchant and the nation.

The anatomy of cruelty The text presents graphic, firsthand accounts from surgeons and ship-masters to expose the brutality of the Middle Passage. These testimonies reveal the systematic violence used to break the spirits of the enslaved, proving that the trade relies on the total dehumanization of its captives.

The legal and natural imperative The author transitions to the "law of nature," highlighting the universal human right to liberty. He utilizes the colonial Charter to show that the practice of slavery contradicts the very laws that govern the provinces where it is most practiced.

The economic argument The argument shifts to the practical disadvantages of the trade, framing it as a hindrance to more lucrative and civilized commerce. He posits that Africa’s vast potential is being squandered by the shortsighted, violent pursuit of human captives.

The plan for reform The book concludes with a call to replace the slave trade with a model of equitable exchange. The author outlines how merchants and companies could prosper by trading in natural resources, ultimately warning that the moral cost of continuing the current system is far greater than any possible financial gain.

The People

The author, James Swan, identifies himself as a native of Britain and a friend to the welfare of the American continent. He presents himself not as a detached scholar, but as an impassioned advocate who is fully aware that his background might lead some to view him with suspicion. He acts as a moral arbiter, navigating the tension between his own identity and his commitment to human rights.

The "Ship-masters" and "Factors" serve as the primary antagonists of the work. Swan describes them as men driven by an "insatiable desire of gain," whose hearts have been hardened by the pursuit of wealth. He holds them directly responsible for the wars and misery in Africa, framing them as the primary agents of the "base and inhuman" system.

The "Negro Princes" and "Chiefs" are depicted as caught in a tragic web spun by European traders. Swan portrays them as having been corrupted by the "alluring bait" of goods and weapons provided by the traders, which forces them into a cycle of war against their own neighbors.

Finally, the "Slaves" themselves, though stripped of their agency by the system, are the central focus of the author’s empathy. They are portrayed as "unhappy mortals" who possess an inherent, righteous desire for liberty. Swan elevates their struggle, asserting that their suffering and their cries for justice will ultimately reach Heaven, serving as a silent but powerful indictment of their oppressors.

In Its Own Voice

It certainly can be looked upon in no other light in the Merchants and Ship-masters who are in this Trade to Africa, than stealing of men, being accessary to, and aiding in inciting them to war one with another.

The author makes this point to clarify that the slave trade is not merely a commercial enterprise, but a direct, violent act of theft that instigates regional conflict.

My blood has frequently run cold within me to consider how many of your Slaves had neither convenient food to eat or proper raiment to put on, notwithstanding many of the comforts you enjoy were solely owing to their indefatigable labours.

This quote is used to underscore the hypocrisy of plantation owners who benefit from the labor of those they dehumanize.

What It's Really About

The work is a profound meditation on the compatibility of commerce and morality. It interrogates the fundamental question of whether a society can claim to be "free" while participating in the systematic enslavement of others. The book argues that there is no such thing as an "inhumane" trade that is also "profitable" in the long term; it posits that the moral health of a nation is inextricably tied to its economic practices. By centering the argument on the "law of nature," the text forces the reader to confront the universal humanity of the enslaved, suggesting that the suffering of the oppressed is a direct, spiritual threat to the oppressor.

Why Read It Today

Reading this work today feels like stepping directly into the heat of a foundational, life-or-death debate. It is a challenging read, not only because of its dense, 18th-century prose and the archaic sentence structures, but because it does not shy away from the horrific realities of the slave trade. The descriptions of violence are stark, raw, and deeply distressing; the author provides them specifically to strip away any comfortable illusions the reader might hold.

You will appreciate this book if you are interested in the intellectual roots of the abolitionist movement or if you want to understand how early activists used the rhetoric of their own time to challenge the most monstrous injustices of their era. It is not a polished, modern history book, but a primary document that carries the urgency of a man speaking directly to the conscience of his contemporaries. The author’s voice is candid, sometimes weary, yet persistently hopeful that logic and morality can prevail. The most haunting aspect of the book is the author’s clear-eyed recognition that his words might not be enough, acknowledging that "legislative force" is required to truly stop the "spirit of butchery." It leaves you with a sobering reflection on how long it takes for moral clarity to manifest into systemic change.