Scottish Enlightenment

1700 – 1830

The Scottish Enlightenment designates an eighteenth- and early nineteenth-century flourishing of philosophy, moral and political theory, science, and social thought in Scotland, centered in universities and urban intellectual clubs, and marked by empiricism, naturalistic explanations of human behavior, and a distinctive concern with sociability, progress, and improvement.

At a Glance

Quick Facts
Period
17001830
Region
Scotland, Edinburgh, Glasgow, Aberdeen, Fife (St Andrews), Lowlands of Scotland, Influence across Great Britain, Continental Europe (intellectual reception), North America (colonies and early United States)
Preceded By
Early Modern British Philosophy
Succeeded By
Nineteenth-Century British Idealism and Positivism

1. Introduction

The Scottish Enlightenment refers to an unusually dense and interconnected intellectual efflorescence in Scotland from the early eighteenth to the early nineteenth century. It brought together philosophers, historians, jurists, theologians, physicians, and men of letters working largely within a small number of universities and urban clubs, especially in Edinburgh and Glasgow.

Scholars generally characterize the movement by several recurring features:

  • A commitment to empirical inquiry and experimental philosophy, modeled on Newtonian science and Lockean psychology.
  • A distinctive focus on a “science of man”: systematic investigation of human understanding, passions, and social institutions.
  • A pervasive interest in moral philosophy, political economy, and the historical development of civil society.
  • A concern with commercial society, its benefits and corruptions, and the conditions of liberty and virtue within it.
  • An attempt to reconcile expanding scientific knowledge and historical criticism with a predominantly Presbyterian religious culture.

Major figures such as David Hume, Adam Smith, Francis Hutcheson, Thomas Reid, Adam Ferguson, Henry Home (Lord Kames), William Robertson, and later Dugald Stewart produced works that became foundational for modern philosophy, economics, and the social sciences. Their writings were intertwined with practical debates about education, law, improvement, and empire.

Historians differ over whether the “Scottish Enlightenment” names a coherent movement or a retrospective label for diverse developments. Some emphasize common themes—moderate religion, polite sociability, stadial theories of progress—while others stress the deep disagreements between, for example, Humean skepticism and Reid’s common-sense realism, or between optimistic advocates of commercial progress and more republican critics.

Despite such disputes, there is broad agreement that the Scottish Enlightenment represents a distinctive regional variant of the broader European Enlightenment, shaped by Scotland’s specific institutional arrangements, political circumstances after the 1707 Union, and rapid transition from a relatively poor, agrarian society to a more urban, commercial one. The following sections examine its chronology, social setting, central doctrines, internal controversies, and subsequent influence.

2. Chronological Boundaries and Periodization

Determining the precise temporal limits of the Scottish Enlightenment has been a persistent historiographical question. Most scholars treat it as a long eighteenth century, but they disagree over where to mark its beginning and end.

Competing Periodizations

ApproachProposed RangeRationale
Institutional / politicalc. 1700–1830From post-Glorious Revolution/Union reforms to the death of Dugald Stewart and rise of new 19th‑century philosophies.
Intellectual “high point”c. 1740–1780Bracketed by Hume’s Treatise and Smith’s major works, encompassing the most intense burst of original writing.
Generationalc. 1700–1815From Hutcheson’s early teaching to the Napoleonic era, grouped by cohorts of thinkers.
Narrow “classic” phasec. 1750–1776Focused on the main publications of Hume, Smith, and Ferguson, seen as the movement’s core.

Starting Points

Some historians locate the origin around 1707, the Act of Union, and subsequent restructuring of Scottish universities and public life. Others point earlier to the post-Glorious Revolution settlement (1689) or to Francis Hutcheson’s appointment at Glasgow (1730), which arguably crystallized new trends in moral philosophy and pedagogy.

Alternative views treat the publication of Hume’s A Treatise of Human Nature (1739–40) as the first fully self-conscious expression of a Scottish “science of man.” More institutionally oriented accounts emphasize the emergence of Edinburgh and Glasgow as international centers for medicine, law, and philosophy during the 1720s and 1730s.

End Points

On the closing end, some scholars extend the period to about 1830, highlighting Dugald Stewart, Thomas Brown, and early James Mill as systematizers and transmitters of Scottish ideas. Others mark an earlier endpoint around 1800 or 1815, aligning it with the impact of the French Revolution, the spread of German idealism, and the rise of Romanticism, which introduced new philosophical and aesthetic paradigms.

A minority view argues for a sharper cutoff tied to institutional change: the waning of club culture, the professionalization of academic disciplines, and reforms in Scottish universities that fragmented the earlier, integrative intellectual environment.

Despite these divergences, most accounts agree on a three-phase structure—an early formative period, a high Enlightenment generation, and a later phase of consolidation and transmission—used in this entry to organize figures and themes.

3. Historical and Political Context

The Scottish Enlightenment unfolded within a rapidly changing political and social landscape shaped by union with England, dynastic conflict, and economic transformation.

The Union and British State Formation

The Act of Union (1707) joined the Scottish and English parliaments, creating Great Britain. While Scotland lost its separate legislature, it retained its own legal system, church (the Kirk), and universities. Historians generally agree that this arrangement:

  • Integrated Scotland into a larger imperial economy, facilitating access to English markets and colonial trade.
  • Left room for a distinct Scottish civil society, within which intellectual life could flourish.
  • Generated debates about national identity, subordination, and improvement that permeated writings on history and politics.

The Jacobite risings (1715, 1745), aiming to restore the Stuart dynasty, highlighted enduring divisions. Their defeat, especially after Culloden (1746), was followed by efforts to pacify and “improve” the Highlands, which many Enlightenment authors discussed in terms of civilization, manners, and stages of social development.

Social Structure and Economic Change

Eighteenth-century Scotland moved from relative poverty and agrarianism toward commercialization and urbanization, especially in the Lowlands. Key developments included:

  • Agrarian improvement: enclosure, new crops, and estate management, often guided by lairds influenced by Enlightenment agronomy.
  • Expansion of Atlantic trade, shipbuilding, and tobacco and sugar commerce via Glasgow and other ports.
  • Growth of burghs such as Edinburgh, Glasgow, and Aberdeen as centers of printing, professions, and polite society.

These changes produced new elites—lawyers, professors, merchants—who became both audience and authors for Enlightenment discourse. At the same time, historians note persistent regional inequalities, with the Highlands often portrayed as “backward” in stadial terms.

Political Culture and the Kirk

Scottish political life after 1689 was shaped by the Revolution settlement, Whig predominance, and the complex internal politics of the Church of Scotland. A division between Moderates and Evangelicals in the Kirk influenced debates over moral theory, skepticism, and church patronage.

Many leading Enlightenment figures (e.g., William Robertson) were Moderate churchmen who combined support for the Hanoverian regime with advocacy of toleration, order, and polite learning. Their alignment with state and Kirk patronage networks helped secure university appointments and facilitated the institutionalization of Enlightenment thought, while also provoking criticism from more orthodox or radical opponents.

In sum, the Scottish Enlightenment developed within a post-revolutionary, Whig, imperial framework, in which questions of national status, social hierarchy, and economic modernization were deeply entangled with intellectual projects.

4. Institutions, Universities, and Learned Societies

The distinctive institutional landscape of Scotland—especially its dense university network and vibrant club culture—provided crucial settings for Enlightenment activity.

Universities and Curricula

Scotland possessed four university centers (Edinburgh, Glasgow, Aberdeen’s colleges, and St Andrews) serving a relatively small population, which historians see as unusually high institutional density.

UniversityDistinctive Features (18th c.)Representative Figures
GlasgowEarly seat of moral sense teaching; strong in moral philosophy and political economyFrancis Hutcheson, Adam Smith, Thomas Reid
EdinburghLeading in medicine, law, and belles lettres; close to legal and political elitesWilliam Robertson, Dugald Stewart, Adam Ferguson, Henry Home (as patron)
Aberdeen (King’s & Marischal)Noted for logic, metaphysics, and later Common Sense philosophyThomas Reid (before Glasgow), George Campbell, James Beattie
St AndrewsSmaller, more provincial, but part of wider networkSome roles in theology and classics

Curricula were reformed to emphasize Newtonian physics, Lockean psychology, moral philosophy, and rhetoric. Courses often integrated ethics, jurisprudence, political economy, and history, reflecting a characteristically Scottish blending of disciplines. Professors frequently lectured in English rather than Latin and aimed at a broad, including extra-mural, audience.

Learned Societies and Clubs

A dense associational life complemented formal education. Urban clubs and societies fostered interdisciplinary interaction, debate, and sociability.

Notable examples include:

  • The Philosophical Society of Edinburgh (later the Royal Society of Edinburgh), which promoted scientific and historical research.
  • The Select Society (1754–1764), gathering lawyers, clergy, and literati—Hume, Smith, Robertson, Kames—for debates on politics, language, and improvement.
  • The Poker Club, associated with supporters of a Scottish militia and broader constitutional discussion.
  • Literary societies and student clubs in university towns, which trained participants in polite conversation and public speaking.

These associations provided arenas for the discussion of works in progress, fostered peer review before formal publication, and linked intellectuals to patronage networks in church, law, and government.

Publishing, Periodicals, and the Book Trade

Edinburgh and Glasgow printers, booksellers, and journals formed another vital infrastructure. A flourishing periodical culture—earlier magazines and later, though slightly beyond the classic phase, the Edinburgh Review—disseminated ideas, reviewed new works, and connected Scottish authors to British and continental readers.

Historians argue that the interplay of universities, clubs, and print created a relatively integrated public sphere in which philosophical, economic, and historical questions could be discussed across professional and social lines, while still shaped by patronage, ecclesiastical politics, and state interests.

5. The Zeitgeist: Reason, Improvement, and Sociability

Commentators commonly characterize the Scottish Enlightenment’s “spirit of the age” as a blend of empirical rationality, practical reformism, and concern with manners and sociability.

Reason and Experimental Inquiry

Scottish thinkers generally embraced reason and empirical method not as abstract rationalism, but in the guise of Newtonian experimental philosophy and Lockean psychology. They sought to extend these approaches to a “science of man,” examining understanding, passions, and institutions through observation and history.

Proponents portrayed this orientation as compatible with moderate religion and everyday common sense, distancing it from both scholastic metaphysics and radical rationalism. Critics, especially more orthodox theologians, worried that such naturalistic inquiry could erode revealed religion and traditional authority.

Improvement and “Polite” Modernity

The ideal of “improvement” (in agriculture, manners, economy, and institutions) became central. Landowners experimented with new farming methods; municipal authorities pursued urban cleanliness and order; educators reformed curricula. Intellectuals analyzed these changes through theories of progress and stadial development.

At the same time, many Scots celebrated and cultivated politeness—refined manners, taste, and conversation—viewing it as both a marker and an instrument of civilization. Clubs and drawing rooms were seen as schools of civility where reasoned debate and mutual deference could flourish.

Yet attitudes toward improvement and politeness were not uniformly optimistic. Some, like Adam Ferguson, stressed the dangers of luxury, dependence, and the erosion of martial or civic virtues in commercial society.

Sociability and the Moral Sentiments

A distinguishing feature of the Scottish Enlightenment zeitgeist was an emphasis on sociability and sympathy as fundamental to human nature. Moral philosophers argued that humans are naturally disposed to fellow-feeling, and that moral norms emerge from patterns of mutual interaction, approbation, and blame.

This focus led to rich accounts of conversation, public opinion, and civil society as mediating forces between individuals and the state. It also underpinned a belief—though variably qualified—that commercial and urban life, if properly structured, could foster mutual dependence and cooperative behavior rather than pure egoism.

Overall, the period’s guiding ethos combined confidence in human capacities for rational inquiry and moral sentiment with an acute awareness of the fragility of virtue under the pressures of modernization and empire.

6. Central Philosophical Problems

Scottish Enlightenment thinkers converged on a set of recurring philosophical questions, though they often offered sharply divergent answers.

Human Understanding and the Limits of Reason

Building on Locke and reacting to both Cartesian rationalism and Humean skepticism, Scots investigated:

  • The nature of ideas, perception, and belief.
  • The justification of our beliefs in causation, induction, and the external world.
  • The status of self and personal identity.

Hume’s radical empiricism posed challenges that Thomas Reid and later Common Sense philosophers tried to meet by positing irreducible first principles of belief grounded in human nature.

Foundations of Morality

Moral philosophy was perhaps the central discipline. Scots debated whether:

  • Moral distinctions are discerned via an innate moral sense (Hutcheson).
  • They arise from sentiment and sympathy (Hume, Smith).
  • They are grounded in reason, divine command, or self-evident principles (Reid, some theologians).

Key issues included the role of benevolence versus self-love, the relation between virtue and utility, and the psychological basis of moral motivation.

Social and Political Order

In parallel, philosophers explored:

  • The origins of property, government, and law.
  • The conditions of political obligation and legitimate authority.
  • The nature and value of commercial society.

Theories of civil society and stadial development reframed political philosophy as a historical and sociological inquiry rather than a purely abstract contractarian exercise.

Religion and Natural Belief

Questions about the rationality of religious belief, miracles, and natural religion loomed large. Hume’s critiques of traditional theism prompted extensive apologetic responses. Many sought to reconcile revealed religion with moral sense theory and common sense realism, while others emphasized the sociological functions of religion.

Methodology and the “Science of Man”

Finally, Scots reflected on the appropriate methods for studying humans and society. They debated:

  • Analogies between natural science and moral science.
  • The roles of introspection, history, and statistics (in a broad sense).
  • The limits of speculative system-building.

These concerns shaped emerging disciplines—political economy, historical jurisprudence, aesthetics—and helped define the modern boundaries between philosophy, social science, and history.

7. Moral Sense Theory and the Passions

Debates over moral sense theory and the passions formed a core of Scottish moral philosophy, especially in the early and high Enlightenment.

Moral Sense Theory

Francis Hutcheson is generally credited with systematizing moral sense theory in works such as An Inquiry into the Original of Our Ideas of Beauty and Virtue (1725). He argued that humans possess:

  • A distinct moral sense, akin to an internal sense of beauty, that enables immediate perception of moral qualities.
  • A natural disposition toward benevolence, which the moral sense approves and takes pleasure in.

Hutcheson’s followers held that this innate sense allows moral judgments that are neither reducible to self-interest nor derived from abstract rational deduction alone. The theory was attractive to many moderate theologians, who saw it as supporting a benevolent image of God and human nature.

Critics, including some Calvinist theologians and later Reid, questioned whether positing a special sense was necessary or explanatory. They worried it might detach morality from stable rational or divine foundations and struggled with the theory’s account of moral disagreement and moral education.

Passions, Sentiments, and Sympathy

Scottish authors also developed nuanced psychologies of the passions (or affections). Hutcheson distinguished calm from violent passions and highlighted how certain affections (e.g., compassion) are intrinsically other-regarding.

David Hume’s Treatise and Enquiry concerning the Principles of Morals reoriented the discussion by:

  • Treating passions as non-rational but psychologically structured responses that motivate action.
  • Emphasizing sympathy as a mechanism by which feelings spread and become the basis for moral evaluation.

Adam Smith’s Theory of Moral Sentiments further refined these ideas. He analyzed:

  • How we imaginatively “enter into” others’ situations (sympathy).
  • How an internalized impartial spectator allows us to assess the propriety of our own passions.

Smith’s approach partly displaced the language of a dedicated moral sense with a more complex model of reflective sentiment and social interaction.

Theological and Philosophical Reactions

Some Reformed theologians embraced moral-sense and passion-centered ethics as support for a natural law accessible to all, while others feared it minimized sin and divine command. Philosophers in the Common Sense tradition interacted with sentimentalist accounts by affirming the reality of moral feelings but seeking more cognitive or intuitive foundations for moral principles.

Overall, Scottish treatments of the moral sense and passions contributed to a broader shift toward sentimentalist ethics, even as internal debates continued over the role of reason, God, and social learning in shaping moral life.

8. Humean Skepticism and its Critics

David Hume emerged as the most influential—and controversial—figure in the Scottish Enlightenment, especially for his skeptical analyses of knowledge, religion, and selfhood.

Forms of Humean Skepticism

In the Treatise and later Enquiry, Hume advanced:

  • Epistemological skepticism about causation and induction: we never perceive necessary connections, only constant conjunctions; our expectation of future regularities rests on habit, not rational proof.
  • Doubts about the self as a simple, enduring substance, viewing it instead as a bundle of perceptions.
  • Religious skepticism, notably in his critique of miracles as violations of uniform experience and in the Dialogues concerning Natural Religion, which question design arguments for God.

Hume combined these skeptical arguments with a naturalistic account of human belief: although rational justification is elusive, our nature compels us to form stable expectations and social practices.

Philosophical Critics

Hume’s work generated strong reactions among fellow Scots:

  • Thomas Reid accused him of undermining basic beliefs in the external world, causation, and personal identity. Reid argued that such beliefs rest on first principles of common sense implanted by God and are more certain than any skeptical premises.
  • James Beattie, George Campbell, and James Oswald mounted polemical attacks, especially on Hume’s religious skepticism. They contended that ordinary consciousness and widespread testimony provide stronger evidence for miracles and theism than Hume allowed.
  • Other critics, such as Henry Home (Lord Kames), accepted some aspects of Hume’s empiricism but resisted his more radical conclusions, proposing alternative psychological explanations or emphasizing practical certainty over theoretical doubt.

Theological and Institutional Responses

Because many Scottish intellectuals depended on church or civic patronage, Hume’s perceived irreligion provoked concern. His candidacy for a university chair was blocked, and several clerical opponents sought ecclesiastical censure, although formal prosecution failed.

Moderate churchmen like William Robertson adopted a strategic stance: they often avoided direct public confrontation with Hume while quietly promoting works (e.g., Reid’s) that could counteract his influence in education and preaching.

Reassessment and Internalization

Later Scottish philosophers did not simply reject Hume but selectively incorporated his insights. Even critics acknowledged the force of his analysis of custom, habit, and sympathy. Historians note that the Common Sense school defined itself largely in opposition to Hume, thereby cementing his centrality to the period’s philosophical self-understanding.

Debates over the adequacy of Hume’s skeptical arguments and the viability of common-sense or theistic responses remain significant in contemporary scholarship, which often re-reads the Scottish Enlightenment through the lens of this Hume–Reid confrontation.

9. Scottish Common Sense Philosophy

Scottish Common Sense Realism arose in large part as a systematic response to Humean skepticism and earlier representational theories of perception.

Core Doctrines

Pioneered by Thomas Reid, especially in An Inquiry into the Human Mind on the Principles of Common Sense (1764), this school held that:

  • Humans possess non-inferential, direct knowledge of an external world; perception is not primarily of internal ideas but of external objects themselves.
  • Certain first principles—for example, that there is a real world, that memory is generally reliable, that other minds exist—are self-evident and grounded in common sense.
  • These principles are implanted by God or by “the constitution of our nature” and provide a foundation for science, morality, and religion.

Reid argued that skeptical systems refuting these principles were self-defeating, since even skeptics must rely on them in practice.

Development and Variants

Subsequent figures elaborated and popularized these ideas:

  • Dugald Stewart refined the theory of faculties and emphasized its pedagogical utility, making Common Sense philosophy central to university curricula in Scotland and abroad.
  • James Beattie and George Campbell applied common-sense principles to rhetoric, aesthetics, and Christian apologetics, arguing that ordinary human convictions carry more weight than abstract skeptical reasoning.
AspectHumean View (simplified)Common Sense View
PerceptionIdeas or impressions in the mind; external world inferredDirect awareness of external objects
CausationHabitual expectation; no perceived necessityA basic principle of human thought, trusted as given
SelfBundle of perceptionsReal, continuing subject of experiences
JustificationCustom and psychological necessitySelf-evidence of first principles to normal understanding

Scope and Influence

Common Sense philosophy extended beyond epistemology to:

  • Ethics: defending the objectivity of moral principles as known by conscience and practical reason.
  • Religion: supporting natural theology by appealing to widespread, seemingly universal beliefs in God and design.
  • Rhetoric and criticism: grounding judgments of credibility and taste in shared human sentiments.

Critics, both contemporary and modern, have questioned whether “common sense” is culturally variable and whether appeal to first principles merely restates what needs justification. Others argue that the school underestimated Hume’s challenge by not fully engaging his naturalistic framework.

Nonetheless, Scottish Common Sense philosophy became a dominant framework in late eighteenth- and nineteenth-century Scottish, American, and French thought, shaping curricula in philosophy, theology, and law, and providing a widely adopted alternative to both Cartesian rationalism and radical skepticism.

10. Political Economy and Commercial Society

Scottish Enlightenment writers played a central role in the emergence of political economy as a discipline and in theorizing commercial society.

The Rise of Political Economy

Building on mercantilist debates and continental writings, Scots such as Adam Smith, Sir James Steuart, and later John Millar and James Mill developed systematic analyses of:

  • Division of labor and productivity.
  • Markets, prices, and wages.
  • The roles of state regulation, taxation, and public works.

Smith’s Wealth of Nations (1776) is often viewed as the culminating work of this tradition, but scholars note earlier contributions, including Hutcheson’s lectures and Kames’s legal-economic reflections.

Evaluating Commercial Society

Scottish thinkers extensively examined the moral and political consequences of expanding commerce.

ThinkerGeneral stance toward commerceKey concerns
Adam SmithLargely positive but qualifiedProsperity, liberty, division of labor vs. worker stupefaction, need for education and justice
David HumeFavourableIndustry, refinement of arts, international trade as peace-promoting
Adam FergusonAmbivalent / criticalLoss of martial virtue, dependence, corruption of republican spirit
John MillarAnalytically focusedEffects on family, law, and class structure across stages of society

Many argued that commerce fosters industry, politeness, and mutual dependence, supporting civil liberty and rule of law. Others worried that it encourages luxury, inequality, and loss of civic engagement.

Liberty, Law, and the State

Political economy intertwined with questions of constitutionalism and jurisprudence. Scottish authors debated:

  • The proper limits of state intervention in markets.
  • The relation between property rights and political authority.
  • How commercial growth affected monarchy, aristocracy, and representation.

Most advocated some form of limited government, with the state protecting property, administering justice, and providing certain public goods, while avoiding intrusive economic control. However, they diverged over colonial policy, trade restrictions, and the treatment of poor relief.

Empire, Slavery, and Critique

Commercial analysis intersected with the realities of empire, Atlantic trade, and slavery. Some Scottish thinkers defended or rationalized colonial expansion in stadial terms, portraying it as spreading civilization and commerce. Others, including parts of the later generation, became increasingly critical of slavery and certain imperial practices, using moral sense and natural rights language.

Modern scholarship highlights both the innovative nature of Scottish political economy and its entanglements with imperial and class interests, noting tensions between universalistic moral claims and the realities of commercial modernity.

11. Stadial Theories of History and Society

Stadial or “four stages” theories formed a hallmark of Scottish Enlightenment social thought, providing a developmental framework for understanding institutions and manners.

The Four Stages Schema

Several Scots—among them Adam Smith, Adam Ferguson, John Millar, and Henry Home (Lord Kames)—advanced versions of a common model that divided societies into stages based on their predominant economic activity:

StageEconomic BasisTypical Social Features (as described by Scots)
1. HuntingForaging and huntingLoose social organization, limited property, strong kin ties
2. PastoralHerding animalsEmergence of moveable property, patriarchal structures, early leadership forms
3. AgriculturalSettled farmingHeritable property, more complex law, hierarchies, feudal relations
4. CommercialTrade and manufactureExtensive markets, division of labor, sophisticated law and state institutions

This schema was used to explain shifts in property, law, family forms, and political structures as responses to changing material conditions.

Explanatory Aims

Stadial theory allowed Scots to:

  • Integrate history, jurisprudence, and political economy into a single narrative of progress.
  • Reinterpret feudalism, absolute monarchy, and republicanism as appropriate (or not) to specific stages.
  • Analyze contemporary differences between Europe, colonial societies, and “rude” or “barbarous” peoples without relying solely on biblical chronology or classical authorities.

For example, Millar traced changes in domestic relations and slavery across stages, while Kames offered “conjectural histories” of how legal doctrines might have arisen from practical needs at each level of development.

Normative and Colonial Dimensions

Many authors treated later stages as involving greater refinement, liberty, and security of property, suggesting a progressivist narrative. Yet they often acknowledged that commercial society might also bring dependence and moral corruption, leading to more ambivalent evaluations.

Stadial theory also informed Scottish views of Highland Scotland, American Indians, and other non-European peoples, sometimes justifying policies of “improvement” and civilization. Modern critics argue that this framework contributed to hierarchical, Eurocentric perspectives, even as it challenged static notions of human culture.

Methodological Significance

Because direct evidence for early stages was scarce, Scots relied on “conjectural history”—plausible, systematic reconstructions of how institutions could have developed. Proponents viewed this as an extension of Newtonian and Lockean methods into the moral sciences; skeptics questioned its empirical grounding.

Nonetheless, stadial theory significantly influenced later sociology, anthropology, and historical jurisprudence, providing early models of social evolution and comparative analysis.

12. Religion, Theology, and Natural Religion

Religion remained pervasive in Scottish Enlightenment life, even as philosophical and historical inquiry transformed theological debate.

The Presbyterian Framework

Scotland’s established Presbyterian Kirk shaped educational and intellectual institutions. Many leading figures—such as William Robertson and Thomas Reid—were ministers or closely linked to clerical networks. Within the Kirk, the division between Moderates and Evangelicals affected responses to Enlightenment ideas:

  • Moderates favored latitudinarian, rational religion, moral preaching, and support for polite learning.
  • Evangelicals emphasized doctrinal orthodoxy, conversion, and suspicion toward perceived worldliness or skepticism.

These factions contested church appointments and public influence, which in turn shaped university posts and publishing.

Natural Religion and Apologetics

Scottish thinkers widely engaged with natural religion—belief in God and divine attributes on the basis of reason and the observation of nature. They debated:

  • The strength of design arguments from order and purpose in nature.
  • The compatibility of natural religion with revelation and Scripture.
  • The moral use of religion in supporting virtue and social order.

Hume’s Dialogues concerning Natural Religion and essay on miracles challenged traditional arguments, prompting detailed apologetic responses from figures like George Campbell (Dissertation on Miracles) and *James Beattie. They appealed to common sense, the reliability of testimony, and the convergence of moral sense with Christian teaching.

Moral Theology and the Passions

Moral sense and sentimentalist theories were often integrated into theological ethics. Hutcheson and some successors portrayed a benevolent God who implanted a moral sense and social affections in humans. This view was attractive to Moderates, who used it to stress virtue, benevolence, and sociability over fear of damnation.

More orthodox Calvinists criticized this tendency, arguing that it underplayed human depravity and the need for grace. They worried that grounding morality in natural sentiments might weaken dependence on Scripture and the atonement.

Institutional Negotiations

The relationship between philosophy and theology was negotiated through institutional arrangements:

  • University chairs in moral philosophy, logic, and divinity were often held by clergy or under ecclesiastical oversight.
  • Philosophers commonly framed their work as compatible with or supportive of Christianity, even when adopting naturalistic methods.
  • Controversies, such as attempts to censure Hume or later challenges to William Robertson and other Moderates, reveal tensions but also the capacity of institutions to contain outright rupture.

Overall, the Scottish Enlightenment displayed a complex interplay between efforts to naturalize religious belief and morality, and attempts to reassert or reconfigure Christian doctrine within a changing intellectual environment.

13. Key Figures and Intellectual Networks

The Scottish Enlightenment was less a centralized movement than a web of overlapping intellectual networks centered on key individuals and institutions.

Generational Cohorts

Historians often group figures into overlapping generations:

GenerationRepresentative FiguresDistinctive Roles
Foundational (c. 1700–1740)Francis Hutcheson, Gershom Carmichael, George Turnbull, Colin MaclaurinIntroduced moral sense theory, Lockean thought, and Newtonian science into Scottish curricula.
High Enlightenment (c. 1740–1780)David Hume, Adam Smith, Adam Ferguson, Thomas Reid, Henry Home (Lord Kames), William RobertsonProduced major works in philosophy, political economy, history, and jurisprudence; active in clubs and societies.
Late / Transmission (c. 1780–1830)Dugald Stewart, Thomas Brown, John Millar, James Mackintosh, James Mill, Sir James SteuartSystematized and popularized earlier ideas; connected Scottish thought to wider British, French, and American audiences.

Urban and Institutional Hubs

Edinburgh and Glasgow served as primary hubs:

  • In Edinburgh, interactions among lawyers, clergy, and professors—often mediated through the Select Society, courts, and the university—linked Hume, Smith, Kames, Robertson, Ferguson, and later Stewart.
  • In Glasgow, Hutcheson’s teaching created a lineage including Smith and Reid. The city’s mercantile community provided a setting for discussions of commerce and improvement.

Aberdeen formed another cluster, with Reid, Campbell, and Beattie associated with the “Aberdeen Philosophical Society.”

Patronage and Clerical Networks

Intellectual advancement often depended on patronage:

  • Landed and judicial elites like Lord Kames and Lord Monboddo supported younger scholars and facilitated appointments.
  • The Moderate leadership of the Church of Scotland, particularly Robertson, used ecclesiastical influence to shape university chairs and encourage a program of polite learning.

Such networks sometimes provoked resistance from Evangelicals and others who saw them as instruments of political and theological control.

Scottish thinkers maintained extensive correspondence with English, Irish, and continental figures. Hume and Smith interacted with French philosophes; later, Stewart’s students and admirers spread Scottish doctrines to France and North America.

These networks helped integrate Scottish debates into wider Enlightenment controversies while allowing local concerns—such as the Union, Highland pacification, and imperial policy—to shape distinctive contributions.

14. Landmark Texts and Their Reception

A relatively small number of landmark texts came to define the Scottish Enlightenment, both contemporaneously and in later assessments.

Key Works

WorkAuthorYearDomain
A Treatise of Human NatureDavid Hume1739–40Epistemology, psychology, ethics
An Enquiry concerning Human UnderstandingHume1748Epistemology, religion
An Inquiry into the Original of Our Ideas of Beauty and VirtueFrancis Hutcheson1725Moral sense theory, aesthetics
The Theory of Moral SentimentsAdam Smith1759Moral psychology, ethics
An Inquiry into the Nature and Causes of the Wealth of NationsSmith1776Political economy
An Essay on the History of Civil SocietyAdam Ferguson1767Social and political theory
An Inquiry into the Human Mind on the Principles of Common SenseThomas Reid1764Epistemology, perception

Contemporary Reception

Reception varied significantly:

  • Hume’s Treatise was famously described by its author as falling “dead-born from the press,” attracting limited immediate attention. However, his later Enquiries and essays found a broader audience, especially outside Scotland, while remaining controversial within ecclesiastical circles.
  • Hutcheson’s writings quickly influenced university teaching, particularly at Glasgow, and were widely read by clergy and educated laity. His language of moral sense and benevolence permeated sermons and popular moral literature.
  • Smith’s Theory of Moral Sentiments enjoyed strong immediate success, going through multiple editions in his lifetime. Wealth of Nations had slower but steadily expanding influence, especially among policymakers, merchants, and reformers across Britain and Europe.
  • Ferguson’s Essay on the History of Civil Society gained European readership, often being translated and cited in debates about republicanism, luxury, and national character.
  • Reid’s Inquiry was seen by many Scottish readers as a timely antidote to skepticism and rapidly became a standard philosophical text in Scottish and later American colleges.

Longer-Term Influence

Over the nineteenth and twentieth centuries, these works underwent cycles of reception:

  • Hume became central to academic philosophy, especially in epistemology and philosophy of religion, while his historical writings faded relative to his philosophical fame.
  • Smith was increasingly remembered as an economist, with Wealth of Nations overshadowing Theory of Moral Sentiments until late twentieth-century scholarship revived interest in his moral theory.
  • Hutcheson, once pivotal, saw his reputation wane, though recent work has emphasized his role in both ethics and political theory.
  • Reid and Common Sense philosophy, once dominant in curricula, declined with the rise of German idealism and later analytic traditions, yet have experienced partial revival among historians of philosophy.
  • Ferguson has been reinterpreted as an important precursor to modern sociology and communitarian critiques of liberalism.

Current scholarship often reads these texts not in isolation but as parts of interconnected debates about sentiment, sociability, commerce, and progress within the specific Scottish setting.

15. Transnational Influence and Reception Abroad

The Scottish Enlightenment’s reach extended well beyond Scotland, shaping intellectual and institutional developments across Europe and the Atlantic world.

Britain and Ireland

Within Britain, Scottish works circulated widely:

  • Hume and Smith influenced English debates on empiricism, political economy, and religion.
  • Common Sense philosophy and moral sense theorists informed educational reforms and clerical training.
  • Irish thinkers engaged with Scottish texts in discussions of union, agrarian conditions, and Protestant theology.

There was also movement of personnel: Scots held chairs in English universities and taught in London academies, further diffusing their ideas.

Continental Europe

In France, Hume and Smith were read and discussed by philosophes and later by physiocrats and liberal economists. Smith’s Wealth of Nations influenced debates on free trade and colonial policy; Ferguson’s and Millar’s stadial theories resonated with emerging historical sociology.

In Germany, translations and reviews of Scottish works contributed to Kant’s engagement with Hume and to broader interest in empiricist and common sense approaches, even as German Idealism took different directions. In Italy, Spain, and elsewhere, Scottish political economy and educational ideas found selective reception among reform-minded elites.

North America

Scottish influence in North America was particularly pronounced:

  • Many colonial and early U.S. colleges (e.g., Princeton, Yale, College of William & Mary) incorporated Hutcheson, Reid, and Stewart into their curricula.
  • Common Sense philosophy underpinned much American theology, jurisprudence, and political thought, contributing to discourses on natural rights, republicanism, and constitutionalism.
  • Smith’s economic writings informed debates on tariffs, banking, and internal improvements in the early United States.

Scottish-educated immigrants served as ministers, lawyers, and educators in the colonies and new republic, acting as conduits for Enlightenment ideas.

Global and Colonial Contexts

Through British imperial structures, Scottish theories of stadial development, commerce, and improvement influenced colonial policy in India, the Caribbean, and elsewhere. Some administrators employed these frameworks to justify interventions aimed at “civilizing” or restructuring local societies, while missionaries and educators drew on Scottish moral philosophy in their work.

Modern historians debate the extent to which Scottish thought contributed to imperial ideology versus providing resources for critique of slavery, exploitation, and absolutism. In many cases, the same authors were cited by both colonial reformers and metropolitan critics.

Overall, the Scottish Enlightenment’s transnational reception demonstrates how a relatively small intellectual community, operating within specific local institutions, came to exert disproportionate influence on emerging global debates about reason, commerce, rights, and historical progress.

16. Transition to Nineteenth-Century Thought

By the early nineteenth century, the intellectual configuration characteristic of the Scottish Enlightenment was giving way to new movements and concerns.

Institutional and Cultural Shifts

Several factors contributed to this transition:

  • The deaths or retirements of leading figures—Hume (1776), Smith (1790), Robertson (1793), Reid (1796), Ferguson (1816), Stewart (1828)—reduced the personal networks that had sustained the earlier synthesis.
  • Universities became more specialized and professionalized, with clearer disciplinary boundaries between philosophy, history, law, and the natural sciences.
  • Club culture in Edinburgh and Glasgow waned, and new forms of the public sphere—mass periodicals, party politics, popular movements—emerged.

These changes made it harder to maintain the earlier integrative project that joined moral philosophy, jurisprudence, political economy, and history into a single “science of man.”

New Philosophical Currents

The reception of Kant, German Idealism, and Romanticism introduced alternative frameworks that challenged Scottish empiricism and common sense realism. In Britain:

  • Coleridge and others promoted German philosophy, criticizing Scottish traditions as superficial or merely analytical.
  • Utilitarianism, especially through Bentham and later JS Mill, offered a different approach to ethics and political economy, emphasizing quantitative calculation over moral sentiments or common sense intuitions.

Some Scottish thinkers, like Thomas Brown and James Mill, adapted elements of the earlier tradition while moving toward more associationist or utilitarian positions.

Political and Social Transformations

The French Revolution, Napoleonic Wars, and subsequent conservative reaction altered the political climate. Issues of mass democracy, class conflict, and early industrialization came to the forefront, sometimes straining the older frameworks:

  • The moderate Whig and improvement-oriented politics of many Scots seemed less adequate to address demands for parliamentary reform, labor rights, and responses to urban poverty.
  • Debates over slavery abolition and colonial reform forced reexamination of stadial and commercial theories.

Continuities and Reconfigurations

Despite these shifts, elements of Scottish Enlightenment thought persisted:

  • Common Sense philosophy remained influential in several British and especially North American colleges well into the nineteenth century.
  • Smith’s political economy formed the basis of classical economics, even as later economists reinterpreted his work.
  • Historical and stadial approaches informed emerging historicism, comparative jurisprudence, and sociology.

Historians view the transition less as a sudden break than as a gradual reorientation, where older Scottish themes were selectively retained, transformed, or marginalized in the face of new intellectual and socio-political challenges.

17. Legacy and Historical Significance

The Scottish Enlightenment’s legacy spans multiple disciplines and continues to shape scholarly and public debates about modernity.

Contributions to Philosophy and Social Science

In philosophy, Scots helped define enduring questions about:

  • The limits of empiricism, skepticism, and common sense (Hume and Reid).
  • The role of sentiment, sympathy, and moral sense in ethics (Hutcheson, Hume, Smith).
  • The nature of historical explanation, civil society, and progress (Ferguson, Millar, Kames).

Their work influenced later analytic philosophy, moral psychology, political theory, and philosophy of religion.

In the social sciences, Scottish approaches to political economy, stadial theory, and conjectural history anticipated aspects of modern economics, sociology, anthropology, and historical jurisprudence.

Political and Cultural Impact

The movement shaped conceptions of:

  • Liberalism and constitutionalism, especially through Smith, Hume’s political essays, and common-sense natural rights theories.
  • Civic culture and polite sociability, influencing ideals of education, manners, and public discourse in Britain and North America.
  • National identity in Scotland, where Enlightenment figures became symbols of cultural achievement, even as their ambivalent views of Highlands, language, and tradition have been re-evaluated.

Ambivalences and Critiques

Contemporary historians scrutinize the tensions within the Scottish Enlightenment:

  • Between universalistic claims about human nature and Eurocentric or imperial applications of stadial theory.
  • Between affirmations of human benevolence and sympathy, and acceptance of inequality, patriarchy, or slavery in practice.
  • Between professed empiricism and the speculative character of some conjectural histories.

Some scholars emphasize the movement’s moderate, reformist character; others highlight strands of radicalism in critiques of absolutism, advocacy of toleration, and challenges to religious orthodoxy.

Historiographical Significance

The very category of a distinct “Scottish Enlightenment” has been debated. Supporters argue that the concentration of talent, common themes, and shared institutions justify the label. Skeptics warn against reifying a loose constellation of thinkers into a unified movement.

Despite such disputes, there is wide agreement that Scotland’s eighteenth-century intellectual culture played a major role within the broader European Enlightenment, providing influential models of how to study human beings historically and empirically while grappling with the opportunities and perils of commercial modernity.

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BibTeX
@online{philopedia_scottish_enlightenment,
  title = {Scottish Enlightenment},
  author = {Philopedia},
  year = {2025},
  url = {https://philopedia.com/periods/scottish-enlightenment/},
  urldate = {December 10, 2025}
}

Study Guide

Key Concepts

Scottish Enlightenment

An eighteenth- and early nineteenth-century intellectual movement in Scotland marked by advances in philosophy, moral theory, political economy, history, and science, centered in universities and urban clubs.

Science of Man

The project, especially in Hume and his contemporaries, of explaining human understanding, passions, and social behavior using empirical, quasi-scientific methods modeled on Newtonian experimental philosophy.

Moral Sense Theory

The doctrine, associated with Francis Hutcheson and others, that humans possess an innate faculty or ‘moral sense’ enabling them to perceive moral qualities and feel approval or disapproval, especially of benevolence.

Sympathy and the Impartial Spectator

Sympathy is the imaginative capacity to share the feelings of others; the impartial spectator (in Adam Smith) is an internalized, imagined observer whose judgments help us assess the propriety of our actions.

Common Sense Realism

A Scottish school, led by Thomas Reid and developed by Dugald Stewart and others, which defends basic beliefs about the external world, other minds, causation, and moral norms as self-evident first principles grounded in common sense and human nature.

Stadial (Four Stages) Theory

A developmental view of history that divides societies into stages—typically hunting, pastoral, agricultural, and commercial—to explain changes in property, law, family forms, and government.

Commercial Society and Political Economy

Commercial society denotes a form of social organization based on extensive markets, division of labor, and economic interdependence; political economy is the systematic analysis of how such economies function and how policy affects them.

Natural Religion and Moderate Presbyterianism

Natural religion refers to belief in God and divine attributes based on reason and observation of nature; Moderate Presbyterianism designates a latitudinarian, educated wing of the Church of Scotland that sought to harmonize such rational religion with polite learning.

Discussion Questions
Q1

In what ways did Scotland’s specific institutional setting—its universities, the Kirk, and urban clubs—shape the form and content of Scottish Enlightenment thought?

Q2

Compare Hutcheson’s moral sense theory with Adam Smith’s account of sympathy and the impartial spectator. How does Smith modify or replace the idea of a dedicated ‘moral sense’?

Q3

Why did Hume’s skepticism pose such a challenge for his Scottish contemporaries, and how did Common Sense Realism attempt to answer it?

Q4

How did Scottish stadial (four stages) theory reframe traditional political and legal questions about property, government, and ‘civilization’?

Q5

To what extent did Scottish thinkers view commercial society as compatible with civic virtue and moral character?

Q6

How did Moderate and Evangelical factions within the Church of Scotland differently respond to Enlightenment moral philosophy and historical criticism?

Q7

In what ways did the Scottish Enlightenment both contribute to and challenge imperial and colonial projects?