An Inquiry Into the Nature and Causes of the Wealth of Nations

An Inquiry Into the Nature and Causes of the Wealth of Nations
Germain Garnier

Adam Smith

M. Garnier

An Inquiry Into the Nature and Causes of the Wealth of Nations

SHORT ACCOUNT

OF THE

LIFE AND WRITINGS

OF

DR. ADAM SMITH

Adam Smith, the celebrated author of 'An Inquiry into the Nature and Causes of the Wealth of Nations,' was born in the town of Kirkaldy, on the 5th of June 1723. His father, at an early period of life, practised as a writer to the signet in Edinburgh, and officiated as private secretary to the Earl of Loudon, during the time his Lordship was principal secretary of state in Scotland, and keeper of the great seal; but afterwards settled at Kirkaldy, where, for some time before his death, he held the office of comptroller of the customs. He died a few months before the birth of his son.

The constitution of young Smith, during infancy, was so sickly as to require all the care and solicitude of his surviving parent, whose only child he was. The duty which thus devolved on his mother, it is allowed, she discharged in the most ample manner; and, indeed, carried her indulgence so far as to have drawn on herself, it has been said, some degree of blame. But it certainly does not appear that any bad consequences resulted, on this occasion, from unbounded parental fondness; nor can it be said, that any permanent disadvantage was felt by the retirement, and even seclusion, which long-continued weakness rendered necessary. To the inability of young Smith to engage in the active sports of his early companions, we ought, perhaps, to trace the foundation of those habits, and love of retirement, which distinguished him, in a peculiar manner, during a long life[1 - It is mentioned, that when about three years old, he was stolen from the door of his uncle, Mr. Douglas, in Strathenry, where his mother had been on a visit, by some tinkers, or gypsies. He was rescued in Leslie wood by his uncle, who was thus the happy instrument, Mr. Stewart observes, of preserving to the world, a genius, which was destined, not only to extend the boundaries of science, but to enlighten and reform the commercial policy of Europe.].

We are informed that Smith received the rudiments of education at the grammar-school of Kirkaldy; and, at that time, attracted some notice by his passion for books, and by the extraordinary powers of his memory. He was also observed, even at this early period of life, to have contracted those habits of absence in company, and of talking to himself, for which he was afterwards so remarkable.

In 1737, he was sent to the university of Glasgow, where, it is said, he evinced an uncommon partiality for the study of mathematics and natural philosophy. Being designed for the English church, he left that place in about three years, and entered, in 1740, an exhibitioner on Snell's foundation, at Baliol college, Oxford. But to this celebrated seminary he acknowledged very slender obligations. He had, however, attained a solid foundation of knowledge, and also the precious habits of attention, and the most industrious application. Here he diligently pursued his favourite speculations in private, interrupted only by the regular calls of scholastic discipline. He cultivated, with the greatest assiduity and success, the study of the languages, both ancient and modern; and formed an intimate acquaintance with the works of the poets of his own country, as well as with those of Greece and Rome, France and Italy. Of the turns and delicacies of the English tongue, it has been observed, he then gained such a critical knowledge, as was scarcely to be expected from his northern education. With the view of improving his style, he employed himself in frequent translations, particularly from the French; a practice which he used to recommend to all who cultivate the art of writing. His modest deportment, and his secret studies, however, provoked, it has been said, the jealousy or the suspicion of his superiors. It has been mentioned, that the heads of the college having thought proper to visit his chamber, found him engaged in perusing Hume's Treatise of Human Nature, then recently published. This the reverend inquisitors seized, while they severely reprimanded the young philosopher.

After a residence of seven years at Oxford, he returned, against the wishes of his friends, to Kirkaldy, the place of his nativity, where he lived for some time with his mother, without determining on any fixed plan of life; Mr. Smith having thus chosen to forego every prospect of church preferment, rather than do violence to his conscience by preaching a particular system of tenets.

In 1748, being then in the twenty-fifth year of his age, he took up his residence in the capital of Scotland, when he first entered into public life, by delivering lectures, under the patronage of Lord Kames, on rhetoric and the belles lettres, which he continued for two years. These lectures were never published; but the substance of them appears to have been afterwards communicated to Dr. Blair, as he acknowledges, in his Lectures, to have been indebted to Dr. Smith for a manuscript treatise, from which he had taken several ideas in the eighteenth lecture, on the general characters of style, particularly the plain and the simple; and also the characters of those English authors belonging to the several classes in that and the following lecture.

In 1751, he was chosen professor of logic in the university of Glasgow. Of the manner in which he discharged the duties of this important situation, it would be difficult now to present a more satisfactory account than that which has been given by one of his own pupils 'In the professorship of logic,' it is observed, 'Mr. Smith soon saw the necessity of departing widely from the plan that had been followed by his predecessors, and of directing the attention of his pupils to studies of a more interesting and useful nature than the logic and metaphysics of the schools. Accordingly, after exhibiting a general view of the powers of the mind, and explaining so much of the ancient logic as was requisite to gratify curiosity, with respect to an artificial mode of reasoning, which had once occupied the universal attention of the learned, he dedicated all the rest of his time to the delivery of a system of rhetoric and belles lettres.'

During the following year, he was nominated professor of moral philosophy in the same university. By this appointment he was peculiarly gratified, and the duties of it he was well fitted to discharge, as it embraced the study of his favourite science, political economy, many of the doctrines of which, even then, had been familiarised to his mind. After entering on the duties of his new situation, he appears to have turned his attention to the division of the science of morals, which he was induced to divide into four parts. The first contained Natural Theology, in which he considered the proofs of the being and attributes of God, and those principles of the human mind upon which religion is founded. The second comprehended Ethics, strictly so called. In the third, he treated, at more length, of that branch of morality which relates to Justice, and which, being susceptible of precise and accurate rules, is capable of a more systematic demonstration. In the fourth, he examined these political regulations which are founded upon Expediency, and which are calculated to increase the riches, the power, and the prosperity of a state.

His lectures on these subjects were always distinguished by a luminous division of the subject, and by fulness and variety of illustration; and as they were delivered in a plain unaffected manner, they were well calculated to afford pleasure as well as instruction. They, accordingly, excited a degree of interest, and gave rise to a spirit of inquiry in the great commercial city of Glasgow, from which the most favourable consequences resulted. His reputation extended so widely, that, on his account alone, a considerable number of students, from different parts of the country, were attracted to the university of that city; and the science which he taught became so popular, that even the trifling peculiarities in his pronunciation and manner of speaking, were often objects of imitation.

During the time Mr. Smith was thus successfully engaged in his academical labours, he was gradually laying the foundation of a more extensive reputation. In the year 1759, he published his 'Theory of Moral Sentiments, or An Essay towards an Analysis of the Principles by which Men naturally judge concerning the Conduct and Character, first of their Neighbours, and afterwards of Themselves.' This work was founded on the second division of his lectures, and was divided into six parts: – The propriety of action: Merit and demerit, or the objects of reward and punishment: The foundation of our judgments concerning our own sentiments and conduct, and of the sense of duty: The effect of utility upon the sentiment of approbation: The influence of custom and fashion upon the sentiments of moral approbation and disapprobation: And, lastly, The character of virtue. To these were added, a brief view of the different systems of ancient and modern philosophy, which is universally acknowledged to be the most candid and luminous that has yet appeared.

This Essay soon attracted a great share of the public attention, by the ingenuity of the reasonings, and the perspicuity with which they were displayed. The principle on which it is founded may be said to be, That the primary objects of our moral perceptions are the actions of other men; and that our moral judgments, with respect to our own conduct, are only applications to ourselves of decisions which we have already passed on the conduct of others. With this doctrine the author thinks all the most celebrated theories of morality coincide in part, and from some partial view of it he apprehends they are all derived. To the same work was subjoined a short treatise on the first formation of language, and considerations on the different genius of those which were original and compounded.

The Theory of Moral Sentiments, immediately on its publication, procured a splendid reputation to the author, and led to a change in his situation in life, that was to him no less pleasing in itself, than gratifying from the means by which it was brought about. But the following lively letter to him, at that time, from his friend Mr. Hume, dated London, 12th April, 1759, will best show the manner in which this work was received, and the influence which it had in deciding on the future life of its author: —

'I give you thanks for the agreeable present of your Theory. Wedderburn and I made presents of our copies to such of our acquaintances as we thought good judges, and proper to spread the reputation of the book. I sent one to the Duke of Argyll, to Lord Lyttleton, Horace Walpole, Soame Jenyns, and Burke, an Irish gentleman, who wrote lately a very pretty treatise on the sublime, Millar desired my permission to send one, in your name, to Dr. Warburton. I have delayed writing to you till I could tell you something of the success of the book, and could prognosticate, with some probability, whether it should be finally damned to oblivion, or should be registered in the temple of immortality. Though it has been published only a few weeks, I think there appear already such strong symptoms, that I can almost venture to foretel its fate. It is, in short, this – But I have been interrupted in my letter, by a foolish, impertinent visit of one who has lately come from Scotland. He tells me, that the university of Glasgow intend to declare Rouet's office vacant, upon his going abroad with Lord Hope. I question not but you will have our friend Fergusson in your eye, in case another project for procuring him a place in the university of Edinburgh should fail. Fergusson has very much polished and improved his treatise on Refinement, and with some amendments, it will make an admirable book, and discovers an elegant and a singular genius. The Epigoniad, I hope, will do; but it is somewhat up-hill work. As I doubt not but you consult the reviewers sometimes at present, you will see in the Critical Review a letter upon that poem, and I desire you to employ your conjectures in finding out the author. Let me see a sample of your skill in knowing hands, by your guessing at the person. I am afraid of Lord Kames's Law Tracts. A man might as well think of making a fine sauce by a mixture of wormwood and aloes, as an agreeable composition by joining metaphysics and Scotch law. However, the book, I believe, has merit, though few people will take the pains of diving into it. But to return to your book and its success in this town, I must tell you – A plague of interruptions! I ordered myself to be denied; and yet here is one that has broke in upon me again. He is a man of letters, and we have had a good deal of literary conversation. You told me that you was curious of literary anecdotes, and therefore I shall inform you of a few that have come to my knowledge. I believe I have mentioned to you already Helvetius's book De l'Esprit. It is worth your reading, not for its philosophy, which I do not highly value, but for its agreeable composition. I had a letter from him a few days ago, wherein he tells me that my name was much oftener in the manuscript, but that the censor of books at Paris obliged him to strike it out. Voltaire has lately published a small work, called Candide, ou l'Optimisme I shall give a detail of it – But what is all this to my book? say you. – My dear Mr. Smith, have patience; compose yourself to tranquillity; show yourself a philosopher in practice as well as profession; think on the emptiness, and rashness, and futility of the common judgments of men; how little they are regulated by reason in any subject, much more in philosophical subjects, which so far exceed the comprehension of the vulgar.

– Non si quid turbida Roma

Elevat, accedas; examenve improbum in illa

Castiges trutina; nec te quæsiveris extra.

A wise man's kingdom is his own breast, or if he ever looks farther, it will only be to the judgment of a select few, who are free from prejudices, and capable of examining his work. Nothing, indeed, can be a stronger presumption of falsehood than the approbation of the multitude; and Phocion, you know, always suspected himself of some blunder when he was attended with the applauses of the populace.

'Supposing, therefore, that you have duly prepared yourself for the worst, by all these reflections, I proceed to tell you the melancholy news, – that your book has been very unfortunate; for the public seem disposed to applaud it extremely. It was looked for by the foolish people with some impatience and the mob of literati are beginning already to be very loud in its praises. Three bishops called yesterday at Millar's shop, in order to buy copies, and to ask questions about the author. The bishop of Peterborough said he had passed the evening in a company where he heard it extolled above all books in the world. The Duke of Argyll is more decisive than he uses to be in its favour I suppose he either considers it as an exotic, or thinks the author will be serviceable to him in the Glasgow elections. Lord Lyttleton says, that Robertson, and Smith, and Bower, are the glories of English literature. Oswald protests, he does not know whether he has reaped more instruction or entertainment from it. But you may easily judge what reliance can be put on his judgment, who has been engaged all his life in public business, and who never sees any faults in his friends. Millar exults, and brags that two thirds of the edition are already sold, and that he is now sure of success. You see what a son of the earth that is, to value books only by the profit they bring him. In that view, I believe, it may prove a very good book.

'Charles Townsend, who passes for the cleverest fellow in England, is so taken with the performance, that he said to Oswald, he would put the Duke or Buccleugh under the author's care, and would make it worth his while to accept of that charge. As soon as I heard this, I called on him twice with a view of talking with him about the matter, and of convincing him of the propriety of sending that young nobleman to Glasgow; for I could not hope, that he could offer you any terms which would tempt you to renounce your professorship. But I missed him. Mr. Townsend passes for being a little uncertain in his resolutions; so, perhaps, you need not build much on this sally.

'In recompense for so many mortifying things, which nothing but truth could have extorted from me, and which I could easily have multiplied to a greater number, I doubt not but you are so good a christian as to return good for evil, and to flatter my vanity, by telling me, that all the godly in Scotland abuse me for my account of John Knox and the reformation.'

Mr. Smith having completed, and given to the world his system of ethics, that subject afterwards occupied but a small part of his lectures. His attention was now chiefly directed to the illustration of those other branches of science which he taught; and, accordingly, he seems to have taken up the resolution, even at that early period, of publishing an investigation into the principles of what he considered to be the only other branch of Moral Philosophy, – Jurisprudence, the subject of which formed the third division of his lectures. At the conclusion of the Theory of Moral Sentiments, after treating of the importance of a system of Natural Jurisprudence, and remarking that Grotius was the first, and perhaps the only writer, who had given any thing like a system of those principles which ought to run through, and be the foundation of the law of nations, Mr. Smith promised, in another discourse, to give an account of the general principles of law and government, and of the different revolutions they have undergone in the different ages and periods of society, not only in what concerns justice, but in what concerns police, revenue, and arms, and whatever else is the object of law.

Four years after the publication of this work, and after a residence of thirteen years in Glasgow, Mr. Smith, in 1763, was induced to relinquish his professorship, by an invitation from the Hon. Mr. Townsend, who had married the Duchess of Buccleugh, to accompany the young Duke, her son, in his travels. Being indebted for this invitation to his own talents alone, it must have appeared peculiarly flattering to him. Such an appointment was, besides, the more acceptable, as it afforded him a better opportunity of becoming acquainted with the internal policy of other states, and of completing that system of political economy, the principles of which he had previously delivered in his lectures, and which it was then the leading object of his studies to perfect.

Mr. Smith did not, however, resign his professorship till the day after his arrival in Paris, in February 1764. He then addressed the following letter to the Right Honourable Thomas Millar, lord advocate of Scotland, and then rector of the college of Glasgow: —

'My Lord, – I take this first opportunity after my arrival in this place, which was not till yesterday, to resign my office into the hands of your lordship, of the dean of faculty, of the principal of the college, and of all my other most respectable and worthy colleagues. Into your and their hands, therefore, I do resign my office of professor of moral philosophy in the university of Glasgow, and in the college thereof, with all the emoluments, privileges, and advantages, which belong to it. I reserve, however, my right to the salary for the current half-year, which commenced at the 10th of October, for one part of my salary, and at Martinmas last for another; and I desire that this salary may be paid to the gentleman who does that part of my duty which I was obliged to leave undone, in the manner agreed on between my very worthy colleagues before we parted. I never was more anxious for the good of the college than at this moment; and I sincerely wish, that whoever is my successor, he may not only do credit to the office by his abilities, but be a comfort to the very excellent men with whom he is likely to spend his life, by the probity of his heart and the goodness of his temper.'

His lordship having transmitted the above to the professors, a meeting was held; on which occasion the following honourable testimony of the sense they entertained of the worth of their former colleague was entered in their minutes: —

'The meeting accept of Dr. Smith's resignation in terms of the above letter; and the office of professor of moral philosophy in this university is therefore hereby declared to be vacant. The university at the same time, cannot help expressing their sincere regret at the removal of Dr. Smith, whose distinguished probity and amiable qualities procured him the esteem and affection of his colleagues; whose uncommon genius, great abilities, and extensive learning, did so much honour to this society. His elegant and ingenious Theory of Moral Sentiments having recommended him to the esteem of men of taste and literature throughout Europe, his happy talents in illustrating abstracted subjects, and faithful assiduity in communicating useful knowledge, distinguished him as a professor, and at once afforded the greatest pleasure, and the most important instruction, to the youth under his care.'

In the first visit that Mr. Smith and his noble pupil made to Paris, they only remained ten or twelve days; after which, they proceeded to Thoulouse, where, during a residence of eighteen months, Mr. Smith had an opportunity of extending his information concerning the internal policy of France, by the intimacy in which he lived with some of the members of the parliament. After visiting several other places in the south of France, and residing two months at Geneva, they returned about Christmas to Paris. Here Mr. Smith ranked among his friends many of the highest literary characters, among whom were several of the most distinguished of those political philosophers who were denominated Economists.

Before Mr. Smith left Paris, he received a flattering letter from the unfortunate Duke of Rochefoucault, with a copy of a new edition of the Maxims of his grandfather. Notwithstanding the unfavourable manner in which the opinions of the author of that work were mentioned in the Theory of Moral Sentiments, the Duke informed Mr. Smith, on this occasion, that he had been prevented only from finishing a translation, which he had begun, of his estimable system of morals, into French, by the knowledge of having been anticipated in the design. He also observed, that some apology might be made for his ancestor, when it was considered, that he formed his opinions of mankind in two of the worst situations of life, – a court and a camp. The last communication Mr. Smith had with this nobleman was in 1789, when he gave him to understand, that he would no longer rank the name of Rochefoncault with that of the author of the Fable of the Bees; and, accordingly, in the first edition that was afterwards published of the Theory of Moral Sentiments, this promised alteration was made.

The next ten years of his life, after his arrival from the continent, Mr. Smith passed with his mother at Kirkaldy, though he occasionally, during that time, visited London and Edinburgh. Mr. Hume, who considered a town as the proper scene for a man of letters, made many attempts to prevail on him to leave his retirement.

At length, in the beginning of the year 1776, Mr. Smith accounted to the world for his long retreat, by the publication of his 'Inquiry into the Nature and Causes of the Wealth of Nations.' This work chiefly comprehended the subject of the fourth and last division of his lectures, namely, those political regulations that have their origin in expediency. For about twenty years of his life, his attention had been chiefly devoted to the study of subjects connected with the science of political economy. His long residence in the mercantile city of Glasgow afforded him opportunities of deriving information, in many particulars, from the best sources; his travels on the continent contributed to extend his knowledge, and correct many of those misapprehensions of life and manners which the best descriptions of them are found to convey; and the intimacy in which he lived with some of the leaders of the sect of economists, and other writers on the subject of political economy, could not fail to assist him in methodizing his speculations, and of adding to the soundness of his conclusions. – After his arrival in this country, he wanted nothing more than leisure, to arrange his materials, and prepare them for publication: and for this purpose he passed in retirement the subsequent ten years.

The great aim of Mr. Smith's Inquiry, the fruit of so much research, and the work of so many years, is, as Professor Stewart observes, to direct the policy of nations with respect to one most important class of its laws, – those which form its system of political economy: 'and he has unquestionably,' the same eloquent writer adds, 'had the merit of presenting to the world the most comprehensive and perfect work that has yet appeared on the general principles of any branch of legislation.'

'A great and leading object of Mr. Smith's speculations,' as Mr. Stewart also observes, 'is to demonstrate, that the most effectual plan for advancing a people to greatness, is to maintain that order of things which nature has pointed out, by allowing every man, as long as he observes the rules of justice, to pursue his own interest in his own way, and to bring both his industry and his capital into the freest competition with these of his fellow citizens.'

Several authors, in this country, had before written on commercial affairs, but Mr. Smith was the first who reduced to a regular form and order the information that was to be obtained on that subject, and deduced from it the policy which an enlightened commercial nation ought to adopt. The successful manner in which he has treated this unlimited freedom of trade, as well as some others, and his able exposure of the errors of the commercial system, have rendered the science of which he treats highly interesting to the great body of the people; and a spirit of inquiry, on every branch of political economy, has, in consequence, been excited, which promises now, more than ever, to be attended with the most beneficial effects. This intricate science, the most important to the interests of mankind though long neglected, Dr. Smith has had the merit of advancing so far, as to lay a foundation, on which, it may safely be said, investigation may for a long time proceed.

It has frequently been alleged, that Dr. Smith was indebted for a large portion of the reasonings in his Inquiry to the French economists, and that the coincidence between some branches of his doctrine and theirs, particularly those which relate to freedom of trade and the powers of labour, is more than casual. But Professor Stewart has ably vindicated him from this charge, and established his right to the general principles of his doctrine, which, he thinks, were altogether original, and the result of his own reflections. That he, however, derived some advantage from his intimacy with Turgot, and those great men who were at the head of the sect of economists, and, perhaps, adopted some of their illustrations, it would be as unnecessary to deny, as it would he far from discreditable to his talents to acknowledge.

There is also a similar, or perhaps a greater coincidence between many parts of his doctrine and the opinions of Sir James Stewart, as detailed in his 'Inquiry into the Principles of Political Economy.' This congruity of opinion is chiefly apparent in their respective conclusions concerning the effects of competition, – the principles of exchangeable value, – the relation between the interest of money and the profit of stock, – the functions of coin, – the rise and progress of credit, – and the sources and limits of taxation. As this author had published his Inquiry many years before Dr. Smith's work appeared, and had, besides, lived in great intimacy with him, there was some reason to believe, what has been often asserted, that he possessed a just claim to some of the doctrines contained in that work, though Dr. Smith never once mentioned his name in any part of his work. But the present Sir James Stewart, who has recently published a full edition of the writings of his father, relinquishes, on his part, all such pretensions. With the partiality of a friend, in ranking his father with Dr. Smith, he gives it as his opinion, however, that both had, with original powers of equal strength, drawn their knowledge from the same source, the French economists.

Dr. Mandeville has also, of late, got the credit of being the author of those Principles of Political Economy, which have interested the world for the last fifty years, and to him alone, it is said, not only the English, but also the French writers, are indebted for their doctrines in that science. In the work of this eccentric writer, there seems, indeed, a similarity of opinion on some of the more obvious sources of wealth, particularly in the division of labour, which Dr. Smith investigates so fully; and in the erroneous doctrine of productive and non-productive labour; and also, perhaps, on some other points: but it would be difficult to show, that he ought, on this account, to be considered the author of all, or even the chief part of what has been written on the subject. On this, as well as on all questions of a similar nature, a great diversity of opinions will subsist. But it may be a matter of curiosity to those who are unacquainted with his work, the Fable of the Bees, not only to trace the connection of that author's sentiments with what is advanced by subsequent writers on this important subject, but also to learn his peculiar notions of morality, that attracted, at one time, so much attention. These last, Dr. Smith says, though described by a lively and humorous, yet coarse and rustic eloquence, which throws an air of truth and probability on them, are, almost in every respect, erroneous.

Soon after the publication of the Wealth of Nations, Mr. Smith received the following congratulatory letter from Mr. Hume, six months before his death, dated Edinburgh, 1st April 1776.

'Euge! Belle! Dear Mr. Smith – I am much pleased with your performance, and the perusal of it has taken me from a state of great anxiety. It was a work of so much expectation, by yourself, by your friends, and by the public, that I trembled for its appearance; but am now much relieved; not but that the reading of it necessarily requires so much attention, and the public is disposed to give so little, that I shall still doubt for some time of its being at first very popular. But it has depth, and solidity, and acuteness, and is so much illustrated by curious facts, that it must at last take the public attention. It is probably much improved by your last abode in London. If you were here at my fireside, I should dispute some of your principles. But these, and a hundred other points, are fit, only to be discussed in conversation. I hope it will be soon, for I am in a very bad state of health, and cannot afford a long delay.'

The publication of this great work drew praise to its author, indeed, from many different quarters. – Dr. Barnard, in a political epistle, addressed to Sir Joshua Reynolds, where the characteristic qualities of some eminent literary men of that time are brought forward, spoke of Smith as one who would teach him how to think. Gibbon made honourable mention of him in his Roman history; and Mr. Fox contributed, in no small degree, to extend his reputation, by observing in the House of Commons, that 'the way, as my learned friend Dr. Adam Smith says, for a nation, as well as an individual, to be rich, is for both to live within their income.'

The opinion which Dr. Johnson delivered, at that time, on its being alleged by Sir John Pringle, that a person who, like Dr. Smith, was not practically acquainted with trade, could not be qualified to write on that subject, may also be mentioned here, though somewhat erroneous, as far as it respects the received doctrines of Political Economy: – 'He is mistaken,' said Johnson. 'A man who has never been engaged in trade himself, may undoubtedly write well on trade; and there is nothing which requires more to be illustrated by philosophy than trade does. As to mere wealth, that is to say, money, it is clear that one nation, or one individual, cannot increase its store but by making another poorer; but trade procures what is more valuable, the reciprocation of the peculiar advantages of different countries. A merchant seldom thinks of any but his own trade. To write a good book upon it, a man must have extensive views. It is not necessary to have practised, to write well upon a subject.'[2 - Boswell's Life of Johnson, vol. iv. p. 17]

On the Inquiry into the Causes of the Wealth of Nations, it only remains farther to be observed, that its success has been every way commensurate to its merits. It has, however, been often regretted, that the author did not live to favour the world with his reasonings on those important events which have taken place since 1784, when he put the last hand to his invaluable work. That another, with competent talents, and a mind disposed to the task, should soon appear, to treat of these occurrences, and give a satisfactory view of the progress of the science from that time to the present, is not to be expected. But as the honour to be gained from a successful execution of such an undertaking is very considerable, it is not to be wondered at that an attempt of this kind should be made. Accordingly, Mr Playfair of London has had the boldness to follow Smith, by endeavouring to supply, in part, this desideratum, by adding supplementary chapters and notes to the Treatise on the Wealth of Nations.