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While the details of Smith’s life give us some insight into the connection between his biography and the content of his ideas, we are limited in what we can build upon this as he was a poor correspondent and ultimately a very private man. We actually gain considerably more insight by examining the intellectual climate in which he lived, the so-called ‘Scottish Enlightenment’.³

The Scottish Enlightenment was an outpouring of intellectual achievement that occurred during the middle years of the eighteenth century (roughly 1740–90). It forms a subset of the wider phenomenon of the European Enlightenment. The ‘Century of Light’ or ‘Age of Reason’ was a time when many of the features of the modern world came into focus. Ideas of science, academic freedom, progress, and civil liberty became increasingly popular amongst a newly emerging class of public intellectuals. The idea that the darkness of superstition was being replaced by science and reason as part of a movement of cosmopolitan intellectuals, ‘daring to know’, as the philosopher Immanuel Kant (1724–1804) would later describe it, and refusing to accept truths set down by authority, has become central to understanding the intellectual history of the eighteenth century. This idea of thinking for oneself as enlightenment takes a very particular form in Scotland.

At first glance, eighteenth-century Scotland might seem a surprising place for a world-changing flood of science and philosophy. At the time, many considered the country to be a poor, isolated, and war-ridden backwater, more notable for its warring clans, religious fanatics, and wild landscapes than for intellectual achievement. But a combination of historical circumstances, together with a generation of remarkably talented men (and they were all men – it is worth observing that the Scottish Enlightenment, unlike the French Enlightenment, was a remarkably masculine movement), put Scotland at the forefront of the Enlightenment. Some have conjectured that it was precisely a sense of shame at the country’s supposed backwardness that proved to be the spur for this group to pursue Enlightenment in its particular Scottish form.

The history of the time also gives us good reason to understand why the emerging Scottish middle class were so attracted to the idea of Enlightenment. Seventeenth-century Scotland had been torn apart by a series of civil and religious wars. The Church of Scotland (the Kirk) had developed a particularly rigorous form of Presbyterian Calvinism that stressed strict discipline and punished heresy with excommunication and even, in the infamous case of the student Thomas Aikenhead in 1697, with execution. Beyond the religious and political situation, things were not much better. A series of famines had ravaged the country in the 1690s and the failed attempt to found a colony in Central America had virtually bankrupted Scotland’s leading families by 1702. In this setting, the fraught negotiations for the Union of Parliaments in the early years of the century, in which Smith’s father played a minor supporting role, represent the emergence of a social grouping who saw themselves as forward thinking and modernizing.

As we noted above, the Union of Parliaments with England in 1707 and the defeat of the final Jacobite rebellion in 1745–6, ushered in a long period of relative civil and political security as part of the new Great Britain. This stability came with access to new markets in England and its American colonies and this led in turn to unprecedented economic growth in the second half of the century. Scotland became a place of development and growth. Industries such as linen, glass, and tobacco boomed. Glasgow became the centre of the global tobacco trade as the short journey times to Virginia gave it a comparative edge over other British ports. Tobacco ‘Lords’ such as William Cunninghame (1731–99), Alexander Spiers (1714–82), and John Glassford (1715–83) began to diversify and develop other industries in the city. The growth of Glasgow’s economy at this time saw the beginnings of industrialization and the concomitant development of a particularly advanced banking system to encourage the circulation of capital for investment in new industries. The small city that Smith knew as a student was subject to growing urbanization, with its population growing from 13,000 in 1707 to 77,000 in 1801, to over 200,000 by the end of the nineteenth century.

Stable government and economic growth allowed the already fertile soil of native Scottish institutions to thrive. This was particularly true of the school and university systems. Scotland had one of the most developed education systems of its time. During the Reformation, the spread of Calvinism, with its focus on reading the Bible, encouraged a desire for literacy and led to the creation of an extensive network of Burgh schools. Scotland was also well served for higher education, with its five universities outnumbering England’s two. This meant that the structures were in place for a group of young men to take advantage of this education system and launch themselves on professional careers in the universities, the law, and the church. And that, indeed, is precisely what did happen. A new class of public intellectuals, a gentleman class, arose and transformed the nature of Scottish society over the course of the century.

Smith was at the centre of this milieu. He saw the changes in Scotland, and had a first-hand view of the investment and development in Glasgow. He socialized with many of the merchants and was able to draw on this experience in his economic thinking. The changes that he saw at this time were generally regarded as a good thing: as an example of that most central of Scottish Enlightenment concerns, ‘improvement’. In many respects, this was a self-conscious movement. The Enlightenment belief in science and progress took on a very practical and applied meaning in Scotland. The lessons of science were to be heeded and deliberately applied to improve the state of the country. Some of these, such as the development of scientific agriculture and the reform of landholding, were uncontroversial, while others had a darker side, including the suppression of Highland dress and language.

The upheaval of the Jacobite rebellions convinced the new establishment of the need to civilize Scotland’s northern fringe. The military suppression of the clans was followed by attempts to encourage development in the Highlands through agricultural reform and by opening up the area with new roads and the imposition of a uniform system of justice. The proceeds of the estates confiscated from the Jacobite leaders were used to fund these investments and to encourage a series of planned villages which sought to offer employment to the Highlanders. Towns such as Ullapool and villages like Luss provided modern homes and the promise of employment. The old clan chiefs lost their civil and political power and the century saw movements of people from the Highlands to the towns and cities and to the colonies.

Scotland saw enormous social change in the eighteenth century, and in the circumstances of a rapidly changing country it is little surprise that its intellectual class, the so-called ‘literati’, became preoccupied with an attempt to understand social and historical change. The thinkers of the Scottish Enlightenment gathered in the cities could see the beginnings of urban commercial society and modern agriculture in the Lowlands, but they could also look north to the Highlands and see a much older form of clan-based subsistence economy. The difference fascinated them and posed the question of how the Highlands might be ‘improved’. If we look at Smith’s writings, the Wealth of Nations in particular is filled with Scottish examples. It is no surprise that Smith was interested in society and in economics because he had around about him a living laboratory of rapid social development. But like his fellow literati, his interests were not parochial: he believed that the attempt to generalize from the experience of a particular country would allow for the understanding of universal features of human social life.

Smith’s friends, his fellow literati, were a close-knit group of people from remarkably similar backgrounds. None came from particularly ancient or wealthy families: they were the sons of church ministers, minor landowners, and lawyers and they were making their way in Hanoverian Britain as members of a newly emerging middle class. What they shared in common was a similar educational background and a desire to improve their country. Many of these thinkers became leading figures in their respective disciplines. For example, Smith’s teacher the Irish-born Francis Hutcheson, sometimes referred to as the ‘father’ of the Scottish Enlightenment, developed the style of philosophical education that became the backbone of the Scottish universities during this period. Hutcheson’s success as a lecturer popularized the reconstructed version of the moral philosophy curriculum that became the shared basis of education in the Scottish universities. All students had to take moral philosophy, and the subject, which covered what we now think of as ethics, jurisprudence, aesthetics, politics, sociology, and philosophy of religion, formed a shared background to the thinking of the time. Hutcheson’s desire was to provide a system of moral philosophy that contributed to our knowledge of social life, through a natural jurisprudence and a theory of a moral sense (the innate sense in the human mind that allows us to identify the right thing to do). But more than anything, Hutcheson saw his primary role as the education of virtuous citizens and good Christians. Enlightened education had a social as well as an intellectual function, and this notion deeply influenced Adam Smith’s understanding of what was expected of him in his role at the University of Glasgow.

Hutcheson’s role as a father figure to the Scottish Enlightenment in Glasgow is paralleled by the role of Henry Home, Lord Kames, in Edinburgh. As we saw above, Kames was a senior judge, but he was also a philosopher and legal theorist who produced works of literary criticism and history. Kames sat at the centre of Edinburgh intellectual life, and his reputation as a sarcastic and combative thinker does not detract from his energy in promoting the careers of the younger members of the literati. Kames also acquired a significant estate through marriage and set out to apply the latest scientific knowledge to agricultural improvement, with his book The Gentleman Farmer (1776) intended to be a practical guide to improving land by the introduction of crop rotation and new crops such as the potato.

Another figure who applied himself to amateur scientific agriculture was Adam Ferguson (1723–1816). The long-serving Professor of Moral Philosophy at the University of Edinburgh, who was the only member of the group born in the Highlands, kept a farm at Hallyards in Lothian, where he would experiment with the latest agricultural methods. Ferguson’s fame was built on An Essay on the History of Civil Society (1767), which has earned him the reputation as one of the founders of sociology. Ferguson’s book was intended to trace the development of human social life through history, and it is a clear example of what we will see as the Scottish Enlightenment’s fascination with social change. Ferguson was interested in the details of the descriptions of different types of society that were being collected by explorers. These suggested that the divergence between the Highlands and Lowlands of Scotland was merely a particular case of a more general division between savage, barbarian, and civilized societies. The interest in types of society became the characteristic feature of Scottish thinking about society and history. Like his fellow literati, Ferguson attempted to explain how a universal human nature adapted to different circumstances to produce diverse social institutions. Ferguson’s history of civilization was accompanied by his History of the Progress and Termination of the Roman Republic (1783), which sought to trace the social changes that led Rome to move from republic to empire. Ferguson, like Hutcheson, was keen to draw a moral lesson from his work, and both the Essay and the History are characterized by an interest in the dangers of moral corruption that face commercial societies.

Thomas Reid (1710–96), who succeeded Smith at Glasgow when he left for the tour with the Duke of Buccleuch, was the founder of the ‘common sense’ school of philosophy and a critic of some aspects of the work of Hume and Smith. Reid, like Ferguson, was also a Minister of the Kirk and shows the intimate relationships that existed between the various institutions of Scotland at the time. Another prime example of this is Hugh Blair (1718–1800), who was Minister of the High Kirk of St Giles in Edinburgh, and perhaps the most famous pulpit orator of his generation, while also holding the post of Professor of Rhetoric and Belles Lettres at Edinburgh University, a position which is often regarded as the first university chair in English Literature. Before his appointment to Edinburgh, Blair succeeded Smith in giving the public lectures on rhetoric in the city and closely followed Smith’s model for a modern rhetorical education.

William Robertson (1721–93) also maintained a parallel career as Kirk Minister and Edinburgh Professor. He was a Professor and later the Principal of Edinburgh University, the leader of the Moderate faction in the General Assembly of the Church of Scotland, Moderator of the Kirk, and Historiographer Royal for Scotland. The Moderate faction within the Kirk was the main political manifestation of the Scottish Enlightenment. Under Robertson’s leadership, the literati were able to advance their Enlightenment project in the face of opposition from the evangelical traditionalists of the Popular faction. The Moderates were active in protecting thinkers like Hume and Kames from prosecution for heresy. They were also able to place sympathetic Ministers in the most influential parishes and to promote a form of religion that was far milder than the rigid Calvinism of the traditional Kirk. The decline in the enforcement of social conformity through the Kirk was accompanied by a shift in focus from strict adherence to the literal word of the Bible to a form of teaching that stressed conscience and good moral behaviour. In a period of less than fifty years, Scotland had moved from a near theocracy where heresy was punishable by death to a more liberal society where David Hume’s heterodox views on religion were met with social disapproval rather than prosecution.

Another interesting feature of this group was their tendency to move around the Scottish universities. For example, Smith’s friend and executor Joseph Black was a Professor at Glasgow and then Edinburgh. Black’s fame rests on isolating carbon dioxide and conducting ground-breaking experiments on latent heat. The other executor of Smith’s estate, James Hutton, studied chemistry and made a fortune by perfecting the production of ammonium chloride. Hutton’s true interest was geology and he travelled around Scotland observing rock formations, eventually producing his Theory of the Earth in 1795, the first modern account of geology. Black was also a physician and acted as doctor to several of the leading members of the Scottish Enlightenment. Scotland became famous for producing some of the leading medical men of the century. John Gregory (1724–73), William Cullen (1710–90), and the brothers John (1728–93) and William Hunter (1718–83) were pioneers of modern medicine. They built the reputation of the Scottish universities as the most advanced centres of medical training in the world.

True to the interest in applying scientific knowledge, the Scottish Enlightenment also produced some of the most successful engineers of the century. James Watt (1736–1819) worked as instrument maker at the University of Glasgow while Smith was a professor there. He went on to develop the separate condenser for the Newcomen steam engine, an innovation that paved the way for the Industrial Revolution. Thomas Telford (1757–1834) was a gifted civil engineer whose work on the Caledonian Canal helped to open the Highlands to commerce and, together with the Forth and Clyde Canal, facilitated water transport in the Scottish mainland.

Smith’s childhood friends from Kirkcaldy included the architect Robert Adam (1728–92), whose Palladian style and neo-classicism dominated architecture at the time and helped to shape the most obvious physical symbol of the Scottish Enlightenment, the New Town of Edinburgh, whose Georgian elegance stands in contrast to the medieval old town. The building of the new town also involved the significant engineering feat of the draining of the Nor Loch and its replacement with Princes Street Gardens.

Adam was among the leading figures in the arts who emerged from Scotland at this time. Others include the portraitists Sir Henry Raeburn (1756–1823) and Allan Ramsay (1713–84), who painted many of the central figures of the period, the historical landscape artist Gavin Hamilton (1723–98), and the cartoonist and caricaturist John Kay, who provided amusing sketches of Edinburgh life. Two great pioneers of the English-language novel, Tobias Smollett (1721–71) and Henry MacKenzie (1745–1831), are also of note, as is a tradition of poets, including Robert Fergusson (1750–74) and Robert Burns (1759–96), who sought to preserve the Scots language and traditional songs from a fashion for Anglicization. The century also saw the foundations of fine art schools and printing presses, notably by the Foulis brothers in Glasgow.

These individuals formed a tight-knit group who met in the clubs of Edinburgh, Glasgow, and Aberdeen: clubs like the Select Society, the Poker Club, the Oyster Club, the Aberdeen Wise Club, the Glasgow Literary Society, and the Political Economy Club, where they heard papers and discussed the latest publications in philosophy and science. Many of these clubs, like the Edinburgh Society for Encouraging Arts, Sciences, Manufactures, and Agriculture, which later became the Royal Society of Edinburgh, were set up to apply scientific knowledge to practical improvement.

The latest ideas from England and Europe were absorbed and debated along with the latest Scottish ideas. The Scots corresponded with and met the leading thinkers of the time as part of a cosmopolitan intellectual environment. Enlightened visitors to Scotland such as Ireland’s Edmund Burke and America’s Benjamin Franklin (1706–90) were welcomed into a ferment of intellectual debate. Indeed, Tobias Smollett described the Scotland of this time as a hotbed of genius. Thinking about Adam Smith as moving in this context is helpful to us, as we can see the thinkers whose ideas influenced the development of his thought and those with whom he interacted in the discussion clubs of Enlightenment Scotland. Understanding Smith as a man of the Enlightenment, and particularly as a man of the Scottish Enlightenment, helps us to grasp a number of centrally important themes in his work: the most important of these being his commitment to science.