Nationality and Race from an Anthropologist's Point of View: Being the Robert Boyle lecture delivered before the Oxford university junior scientific club on November 17, 1919

In Short

Delivered as the 1919 Robert Boyle Lecture at Oxford University, this treatise by anatomist and anthropologist Sir Arthur Keith examines the deep biological and evolutionary roots of human group behavior. Keith argues that modern national conflicts, racial friction, and political divisions are not merely ideological or historical accidents. Instead, they are the direct result of ancient, inherited tribal instincts evolved over millions of years to isolate breeding populations and drive human differentiation. By tracing these evolutionary mechanics across the globe—from the United States to South Africa and Ireland—Keith provides a grounded biological perspective on geopolitical strife, warning that modern statecraft must learn to understand and master these primitive impulses rather than meet them with brute force.

The Story

The argument begins with an assessment of seventeenth-century scientific pioneer Robert Boyle. In Boyle's era, English expansion was beginning to span the globe, yet thinkers of the day viewed distant lands through the lens of natural resources and climate, largely ignoring the biological and social implications of racial and national contact. Keith contrasts this historic blindness with the modern world, where headlines are perpetually filled with racial riots, boundary disputes, and demands for self-determination. To explain why these frictions occur everywhere, Keith introduces a fundamental biological mismatch: human physical structures and mental instincts were forged during a million-year period of "Natural subsistence," where tiny, isolated groups gathered wild food. The sudden shift, merely ten thousand years ago, to "Artificial subsistence" through agriculture allowed mass populations to form, yet human emotional machinery remains stubbornly suited to the ancient, primitive past.

To demonstrate how these primitive instincts manifest in the modern era, Keith takes the reader on a rapid global tour. In the United States, a rigid "colour line" bars social traffic between white and dark populations, even as European immigrants are rapidly assimilated into a unified national mass. Crossing into Canada, Keith highlights the persistence of French-Canadian national identity, preserved like an island despite centuries of English dominance, while along the Pacific coast, racial barriers are erected against Asian migration. Examining South America, he notes how different settlement patterns and a lesser degree of race-caste feeling led to widespread hybridization between Iberians and indigenous populations. In Australia and New Zealand, British settlers established national commonwealths while strictly enforcing racial frontiers against non-European peoples, demonstrating how transplanted populations shed old national divisions to forge new, unified ones. In South Africa, the problem reaches an acute tangle, where British and Boer nationalities clash with one another while simultaneously maintaining an explicit, impassable racial barrier against the native majority.

Returning home, Keith applies these lessons to the British Isles. He asserts that, biologically speaking, the inhabitants of England, Scotland, Wales, and Ireland all belong to the same ancient "North Sea stock" or Nordic type, rendering their conflicts a matter of nationality rather than distinct race. The persistent Irish refusal to merge into a single British nation cannot be explained by blood, but by the difference between "spontaneous" colonization—a genuine movement of the people that carries national spirit—and "forced" government plantations.

Finally, Keith unveils the core evolutionary mechanism: tribal instinct. In primitive human societies, small groups were bound together by subconscious emotional ties that enforced inner unity while creating an isolating frontier against all neighbors. This isolation was Nature's necessary mechanism for breeding differentiated human races. In the modern world, these ancient isolating instincts survive, manifesting in everything from party politics and trade unions to war and patriotism. Keith concludes by advising modern statesmen that force cannot extinguish a national flame; statecraft must patiently guide and master these deep-seated biological instincts to achieve lasting peace.

How It Unfolds

The historical oversight During the seventeenth century, natural philosophers like Robert Boyle meticulously cataloged the geography and natural wealth of newly discovered lands while remaining completely blind to racial and national problems. They treated native encounters purely through trade or religious duty, ignoring the biological forces at play when distinct human groups meet.

The evolutionary mismatch Human instincts and brain machinery were forged over a million years of primitive hunter-gatherer existence, designed for small, scattered bands seeking natural subsistence. The rapid transition to mass agriculture created modern mass populations, leaving human beings equipped with ancient biological machinery that is ill-adapted to modern social conditions.

Surveying the global frontiers Across the United States, Canada, Australasia, and South Africa, incoming populations erect sharp racial barriers to prevent physical fusion, even while absorbing diverse European nationalities. Different colonization patterns—such as Nordic exclusion versus Iberian intermarriage in South America—demonstrate how cultural and biological factors shape group boundaries.

Examining the British Isles The populations of Great Britain and Ireland stem from the same ancient North Sea stock, making internal conflicts a matter of national spirit rather than racial difference. The historical success of spontaneous settlements in North America and Ulster contrasts sharply with forced government plantations, explaining why national feeling cannot be imposed by decree.

The mechanism of race-breeding Primitive human bands operate as isolated groups bounded by territorial and social frontiers, driven by inherited instincts that compel internal loyalty while maintaining hostility toward outsiders. This ancient tribal isolation was the essential machinery that allowed small groups to differentiate into distinct human breeds and races over vast periods of time.

Implications for modern statecraft Subconscious tribal instincts persist in modern life, fueling everyday rivalries, trade unions, and nationalistic surges during times of war. Leaders like Bismarck, Lincoln, and Lloyd George successfully harnessed these deep emotional drives, proving that modern statesmen must understand evolutionary biology to guide national passions peacefully.

The People

• Robert Boyle — The eminent seventeenth-century scientist whose era witnessed the rapid expansion of British overseas settlement. Though he painstakingly cataloged the natural resources, mineral wealth, and climate of newly reached lands, he viewed human populations purely through the lens of religious instruction, entirely overlooking the biological and racial dynamics of human contact.
• The Primitive Band — The ancestral human group that serves as the key subject in Keith's evolutionary framework. Wanting only to secure food and defend its territory, this small unit is bound together by subconscious instincts that demand internal absolute unity while enforcing an isolating, hostile frontier against all surrounding communities.
• The Modern Citizen — The contemporary individual who inherits an evolutionary emotional outfit designed for small-scale prehistoric group life. Trapped between ancient biological drives and the complex demands of mass population centers, the citizen responds to political threats, party rivalries, and war through the activation of dormant tribal instincts.
• The Enlightened Statesman — Exemplified by figures like Abraham Lincoln, Otto von Bismarck, and David Lloyd George, this key political figure recognizes that national unity rests upon deep-seated emotional drives. Rather than attempting to suppress or force national identity by brute command, the ideal leader seeks to understand, awaken, and patiently guide these primitive instincts toward stability and cooperation.

In Its Own Voice

"The politician is too near to these racial and national manifestations of the modern world to see them in their proper light; even the historian is not far enough away from them to see them in their right perspective."

— On the necessity of taking a long evolutionary view to understand contemporary political conflicts and group rivalries.

"A herd of cattle which has occupied a field for some time will resist the intrusion of a second or strange herd; but turn both herds together into a strange pasture and mutual antipathies cease almost at once."

— Illustrating how immigrant groups in a new land drop older national animosities to form a unified population.

"In the Jewish people we see Nature steering one of her cargoes of differentiated humanity between the Scylla and Charybdis of the modern sea of industrial civilization. And race instinct is her steersman."

— Describing how persistent group identity and social boundaries preserve physical and cultural distinctiveness across centuries.

What It's Really About

At its core, the text argues that human group behaviors—nationalism, race prejudice, and political factionalism—are not merely cultural artifacts or recent political inventions. Instead, they are the direct outcome of an evolutionary mechanism designed to drive human speciation. Keith asserts that for human groups to differentiate into distinct races, Nature required an isolating mechanism to prevent interbreeding. Tribal instinct provided that biological wall, creating an internal bond of sympathy alongside an external barrier of suspicion. When modern mass societies are formed through industrialization, these deep-seated subconscious instincts do not disappear. Instead, they manifest in modern political movements, war, and social conflict, proving that human emotional biology remains anchored in its prehistoric origin.

Why Read It Today

This text offers a fascinating look into early twentieth-century physical anthropology and the intellectual climate following the First World War. Readers interested in the history of science, evolutionary theory, and political history will find Keith's perspective remarkably clear and unvarnished. Written in an accessible, confident style for a university scientific audience, the lecture provides a candid snapshot of how prominent thinkers of the era attempted to apply biological models directly to global geopolitics, empire, and social cohesion.

The work does carry the clear stamp of its time, reflecting early 1900s racial terminology, biological determinism, and the Eurocentric assumptions common to post-World War I academic discourse. It assumes a direct line between physical anatomy and complex group behaviors that modern social sciences view with far greater nuance. Yet, reading it today remains valuable: it reveals the historical foundations of evolutionary explanations for human behavior and challenges the reader to reflect on how deeply ancestral instincts might still influence modern political divides.