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An Essay on the Principle of Population

By thomas robert malthus.

There are two versions of Thomas Robert Malthus’s Essay on the Principle of Population . The first, published anonymously in 1798, was so successful that Malthus soon elaborated on it under his real name. * The rewrite, culminating in the sixth edition of 1826, was a scholarly expansion and generalization of the first.Following his success with his work on population, Malthus published often from his economics position on the faculty at the East India College at Haileybury. He was not only respected in his time by contemporaneous intellectuals for his clarity of thought and willingness to focus on the evidence at hand, but he was also an engaging writer capable of presenting logical and mathematical concepts succinctly and clearly. In addition to writing principles texts and articles on timely topics such as the corn laws, he wrote in many venues summarizing his initial works on population, including a summary essay in the Encyclopædia Britannica on population.The first and sixth editions are presented on Econlib in full. Minor corrections of punctuation, obvious spelling errors, and some footnote clarifications are the only substantive changes. * Malthus’s “real name” may have been Thomas Robert Malthus, but a descendent, Nigel Malthus, reports that his family says he did not use the name Thomas and was known to friends and colleagues as Bob. See The Malthus Homepage, a site maintained by Nigel Malthus, a descendent.For more information on Malthus’s life and works, see New School Profiles: Thomas Robert Malthus and The International Society of Malthus. Lauren Landsburg

Editor, Library of Economics and Liberty

First Pub. Date

London: J. Johnson, in St. Paul's Church-yard

1st edition

The text of this edition is in the public domain. Picture of Malthus courtesy of The Warren J. Samuels Portrait Collection at Duke University.

Table of Contents

• Chapter III
• Chapter VII
• Chapter VIII
• Chapter XII
• Chapter XIII
• Chapter XIV
• Chapter XVI
• Chapter XVII
• Chapter XVIII
• Chapter XIX

The following Essay owes its origin to a conversation with a friend, on the subject of Mr. Godwin’s Essay, on avarice and profusion, in his Enquirer. The discussion, started the general question of the future improvement of society; and the Author at first sat down with an intention of merely stating his thoughts to his friend, upon paper, in a clearer manner than he thought he could do in conversation. But as the subject opened upon him, some ideas occurred, which he did not recollect to have met with before; and as he conceived, that every, the least light, on a topic so generally interesting, might be received with candour, he determined to put his thoughts in a form for publication.

The Essay might, undoubtedly, have been rendered much more complete by a collection of a greater number of facts in elucidation of the general argument. But a long and almost total interruption, from very particular business, joined to a desire (perhaps imprudent) of not delaying the publication much beyond the time that he originally proposed, prevented the Author from giving to the subject an undivided attention. He presumes, however, that the facts which he has adduced, will be found, to form no inconsiderable evidence for the truth of his opinion respecting the future improvement of mankind. As the Author contemplates this opinion at present, little more appears to him to be necessary than a plain statement, in addition to the most cursory view of society, to establish it.

It is an obvious truth, which has been taken notice of by many writers, that population must always be kept down to the level of the means of subsistence; but no writer, that the Author recollects, has inquired particularly into the means by which this level is effected: and it is a view of these means, which forms, to his mind, the strongest obstacle in the way to any very great future improvement of society. He hopes it will appear that, in the discussion of this interesting subject, he is actuated solely by a love of truth; and not by any prejudices against any particular set of men, or of opinions. He professes to have read some of the speculations on the future improvement of society, in a temper very different from a wish to find them visionary; but he has not acquired that command over his understanding which would enable him to believe what he wishes, without evidence, or to refuse his assent to what might be unpleasing, when accompanied with evidence.

The view which he has given of human life has a melancholy hue; but he feels conscious, that he has drawn these dark tints, from a conviction that they are really in the picture; and not from a jaundiced eye or an inherent spleen of disposition. The theory of mind which he has sketched in the two last chapters, accounts to his own understanding in a satisfactory manner, for the existence of most of the evils of life; but whether it will have the same effect upon others, must be left to the judgement of his readers.

If he should succeed in drawing the attention of more able men, to what he conceives to be the principal difficulty in the way to the improvement of society, and should, in consequence, see this difficulty removed, even in theory, he will gladly retract his present opinions and rejoice in a conviction of his error.

An Essay on the Principle of Population

The book An Essay on the Principle of Population was first published anonymously in 1798 through J. Johnson (London). The author was soon identified as The Reverend Thomas Robert Malthus. While it was not the first book on population, it has been acknowledged as the most influential work of its era. Its 6th Edition was independently cited as a key influence by both Charles Darwin and Alfred Russel Wallace in developing the theory of natural selection. Warning: template has been deprecated.

PRINCIPLE OF POPULATION ,

AS IT AFFECTS

THE FUTURE IMPROVEMENT OF SOCIETY.

WITH REMARKS

ON THE SPECULATIONS OF MR. GODWIN,

M. CONDORCET,

AND OTHER WRITERS.

PRINTED FOR J. JOHNSON, IN ST. PAUL'S

CHURCHYARD.

The following Essay owes its origin to a conversation with a friend, on the subject of Mr. Godwin's Essay, on avarice and profusion, in his Enquirer. The discussion, started the general question of the future improvement of society; and the Author at first sat down with an intention of merely stating his thoughts to his friend, upon paper, in a clearer manner than he thought he could do, in conversation. But as the subject opened upon him, some ideas occurred, which he did not recollect to have met with before; and as he conceived, that every, the least light, on a topic so generally interesting, might be received with candour, he determined to put his thoughts in a form for publication.

​ The essay might, undoubtedly, have been rendered much more complete by a collection of a greater number of facts in elucidation of the general argument. But a long and almost total interruption, from very particular business, joined to a desire (perhaps imprudent) of not delaying the publication much beyond the time that he originally proposed, prevented the Author from giving to the subject an undivided attention. He presumes, however, that the facts which he has adduced, will be found, to form no inconsiderable evidence for the truth of his opinion respecting the future improvement of mankind. As the Author contemplates this opinion at present, little more appears to him to be necessary than a plain statement, in addition to the most cursory view of society, to establish it.

​ It is an obvious truth, which has been taken notice of by many writers, that population must always be kept down to the level of the means of subsistence; but no writer that the Author recollects, has inquired particularly into the means by which this level is effected: and it is a view of these means, which forms, to his mind, the strongest obstacle in the way to any very great future improvement of society. He hopes it will appear, that, in the discussion of this interesting subject, he is actuated solely by a love of truth; and not by any prejudices against any particular set of men, or of opinions. He professes to have read some of the speculations on the future improvement of society, in a temper very different from a wish to find them visionary; but he has not acquired that command over his understanding which would enable him to believe what ​ he wishes, without evidence, or to refuse his assent to what might be unpleasing, when accompanied with evidence.

The view which he has given of human life has a melancholy hue; but he feels conscious, that he has drawn these dark tints, from a conviction that they are really in the picture; and not from a jaundiced eye, or an inherent spleen of disposition. The theory of mind which he has sketched in the two last chapters, accounts to his own understanding, in a satisfactory manner, for the existence of most of the evils of life; but whether it will have the same effect upon others must be left to the judgement of his readers.

If he should succeed in drawing the attention of more able men, to what he conceives to be the principal difficulty in ​ the way to the improvement of society, and should, in consequence, see this difficulty removed, even in theory, he will gladly retract his present opinions, and rejoice in a conviction of his error.

June 7, 1798.

CHAP. VIII.

CHAP. XIII.

CHAP. XVII.

CHAP. XVIII.

This work was published before January 1, 1929, and is in the public domain worldwide because the author died at least 100 years ago.

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An Essay on the Principle of Population as It Affects the Future Improvement of Society, with Remarks on the Speculations of Mr. Godwin, M. Condorcet, and Other Writers

Learn about this topic in these articles:, assorted references.

…anonymously the first edition of An Essay on the Principle of Population as It Affects the Future Improvement of Society, with Remarks on the Speculations of Mr. Godwin, M. Condorcet, and Other Writers . The work received wide notice. Briefly, crudely, yet strikingly, Malthus argued that infinite human hopes for social…

In 1798 Thomas Malthus wrote An Essay on the Principle of Population . It posed the conundrum of geometrical population growth’s outstripping arithmetic expansion in resources. Malthus, who was an Anglican clergyman, recommended late marriage and sexual abstinence as methods of birth control. A small group of early 19th-century freethinkers, including…

reading the economist Thomas Malthus’s Essay on the Principle of Population in September 1838. That was a seminal moment—even if Malthusian ideas had long permeated his Whig circle. Darwin was living through a workhouse revolution. Malthus had said that there would always be too many mouths to feed—population increases geometrically,…

…Malthus, who, in his famous Essay on the Principle of Population (1798), first marked the enormous significance to human welfare of this increase. With the diminution of historic checks on population growth, chiefly those of high mortality rates—a diminution that was, as Malthus realized, one of the rewards of technological…

principle—enunciated in Thomas Malthus’s “Essay on Population” (1798): according to Malthus, as the labour force increases, extra food to feed the extra mouths can be produced only by extending cultivation to less fertile soil or by applying capital and labour to land already under cultivation—with dwindling results because of…

In 1798 Malthus published An Essay on the Principle of Population as It Affects the Future Improvement of Society, with Remarks on the Speculations of Mr. Godwin, M. Condorcet, and Other Writers . This hastily written pamphlet had as its principal object the refutation of the views of the utopians.…

Thomas Malthus on Population

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In 1798, a 32-year-old British economist anonymously published a lengthy pamphlet criticizing the views of the Utopians who believed that life could and would definitely improve for humans on earth. The hastily written text, An Essay on the Principle of Population as it Affects the Future Improvement of Society, with Remarks on the Speculations of Mr. Godwin, M. Condorcet, and Other Writers , was published by Thomas Robert Malthus.

Thomas Robert Malthus

Born on February 14 or 17, 1766 in Surrey, England, Thomas Malthus was educated at home. His father was a Utopian and a friend of the philosopher David Hume . In 1784 he attended Jesus College and graduated in 1788; in 1791 Thomas Malthus earned his master's degree.

Thomas Malthus argued that because of the natural human urge to reproduce human population increases geometrically (1, 2, 4, 16, 32, 64, 128, 256, etc.). However, food supply, at most, can only increase arithmetically (1, 2, 3, 4, 5, 6, 7, 8, etc.). Therefore, since food is an essential component to human life, population growth in any area or on the planet, if unchecked, would lead to starvation. However, Malthus also argued that there are preventative checks and positive checks on the population that slow its growth and keep the population from rising exponentially for too long, but still, poverty is inescapable and will continue.

Thomas Malthus' example of population growth doubling was based on the preceding 25 years of the brand-new United States of America . Malthus felt that a young country with fertile soil like the U.S. would have one of the highest birth rates around. He liberally estimated an arithmetic increase in agricultural production of one acre at a time, acknowledging that he was overestimating but he gave agricultural development the benefit of the doubt.

According to Thomas Malthus, preventative checks are those that affect the birth rate and include marrying at a later age (moral restraint), abstaining from procreation, birth control, and homosexuality. Malthus, a religious chap (he worked as a clergyman in the Church of England), considered birth control and homosexuality to be vices and inappropriate (but nonetheless practiced).

Positive checks are those, according to Thomas Malthus, that increase the death rate. These include disease, war, disaster, and finally when other checks don't reduce the population, famine. Malthus felt that the fear of famine or the development of famine was also a major impetus to reduce the birth rate. He indicates that potential parents are less likely to have children when they know that their children are likely to starve.

Thomas Malthus also advocated welfare reform. Recent Poor Laws had provided a system of welfare that provided an increased amount of money depending on the number of children in a family. Malthus argued that this only encouraged the poor to give birth to more children as they would have no fear that increased numbers of offspring would make eating any more difficult. Increased numbers of poor workers would reduce labor costs and ultimately make the poor even poorer. He also stated that if the government or an agency were to provide a certain amount of money to every poor person, prices would simply rise and the value of money would change. As well, since population increases faster than production, the supply would essentially be stagnant or dropping so the demand would increase and so would price. Nonetheless, he suggested that capitalism was the only economic system that could function.

The ideas that Thomas Malthus developed came before the industrial revolution and focuses on plants, animals, and grains as the key components of the diet. Therefore, for Malthus, available productive farmland was a limiting factor in population growth. With the industrial revolution and the increase in agricultural production, land has become a less important factor than it was during the 18th century .

Thomas Malthus printed the second edition of his Principles of Population in 1803 and produced several additional editions until the sixth edition in 1826. Malthus was awarded the first professorship in Political Economy at the East India Company's College at Haileybury and was elected to the Royal Society in 1819. He's often known today as the "patron saint of demography" and while some argue that his contributions to population studies were unremarkable, he did indeed cause population and demographics to become a topic of serious academic study. Thomas Malthus died ​in Somerset, England in 1834.

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An Essay on the Principle of Population

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A modern alternative to SparkNotes and CliffsNotes, SuperSummary offers high-quality Study Guides with detailed chapter summaries and analysis of major themes, characters, and more.

Chapter Summaries & Analyses

Chapters 1-2

Chapters 3-5

Chapters 6-9

Chapters 10-15

Chapters 16-19

Key Figures

Index of Terms

Important Quotes

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Discussion Questions

Summary and Study Guide

An Essay on the Principle of Population by Thomas Malthus was first published anonymously in 1798. Its core argument, that human population will inevitably outgrow its capacity to produce food, widely influenced the field of early 19th century economics and social science. Immediately after its first printing, Malthus’s essay garnered significant attention from his contemporaries, and he soon felt the need to reveal his identity. Although it was highly controversial, An Essay on the Principle of Population nevertheless left its impression on foundational 19th century theorists, such as naturalist Charles Darwin and economists Friedrich Engels and Karl Marx. Modern economists have largely dismissed the Malthusian perspective . Principally, they argue Malthus underappreciated the exponential growth brought about by the advent of the Industrial Revolution; by the discovery of new energy sources, such as coal and electricity; and later by further technological innovations. These modern criticisms are easily defended with historical retrospective.

Malthus’s essay has been revised several times since its publication. This summary focuses on the contents of the first edition. In 1806, Malthus revamped his work into four books to further discuss points of contention in the first edition and address many of the criticisms it received. Three more editions followed (published in 1807, 1817, and 1826 respectively), each modifying or clarifying points made in the second version.

Although Malthus’s basic stance on the unsustainable growth of population to food production remains the same throughout all versions, the most dramatic change in format and content is found between the first and second editions. The first edition is notable for its long and detailed critique of the works of William Godwin, Marquis de Condorcet, and Richard Price on the perfectibility of humankind. Its lack of “hard data” and its unpracticed opinions on sex and reproduction were heavily criticized by his contemporaries. The 1806 publication, written at a later point in Malthus’s life, attempts to address these issues by focusing less on critiquing the works of other theorists and offering better data on the fluctuation of population growth throughout various European countries and colonies (Malthus, Thomas Robert. An Essay on the Principle of Population: the 1803 edition . Yale University Press. 2018).

An Essay on the Principle of Population begins with a preface and is subsequently separated into eleven chapters. The preface reveals that a conversation with a friend on the future improvement of society was what sparked Malthus’s inspiration for this work. Chapter 1 further credits the works of David Hume, Alfred Russel, Adam Smith, and many others for inspiring his own writing. He postulates that population grows exponentially, whereas food production only increases in a linear fashion. This disparity in power will inevitably lead to overpopulation and an inadequate amount of food for subsistence.

Chapter 2 further details the above premise. Malthus imagines a world of abundance. In such a society of ease and leisure, no one would be anxious about providing for their families, which incentivizes them to marry early, causing birth rates to explode. When there are too many people and too little an increase in food to support them, the lower classes will be plunged into a state of misery. Thus, Malthus concludes that population growth only happens when there is an increase in subsistence, and misery and vice keep the world from overpopulation.

In chapters 3, 4, and 5, Malthus applies his theory to different stages of society. He argues that “savage” and shepherding societies never grow as fast as their “civilized” counterparts because various miseries keep their numbers in check. Among “savage” societies, a lack of food and a general disrespect of personal liberties prevent their numbers from increasing rapidly. Shepherding communities, meanwhile, often wage war over territories and suffer a high mortality rate. Civilized societies grew rapidly after adopting the practice of tilling, but due to exhausting most fertile land, their numbers no longer increase at the same rate as before.

The following two chapters are notable because they are the only ones that contain hard data. Malthus cites philosopher Richard Price for his analysis of population in America and references demographer Johann Peter Süssmilch for his work on Prussia. Malthus uses both these examples to prove that population fluctuates in accordance with the quantity of food produced. Chapters 8 and 9 are dedicated to critiquing mathematician Marquis de Condorcet’s work while chapters 10 to 15 do the same for political philosopher William Godwin. Malthus rejects the idea of mankind as infinitely perfectible and dismisses charity as a method to relieve poverty.

Chapters 16 and 17 propose the increase of food production as the only solution to reduce extreme poverty and misery among the lower class. Malthus maintains that donating funds is but a temporary relief to aid the most unfortunate; only a permanent increase in agricultural yield can grow the lower class’s purchasing power. Nevertheless, the final two chapters remind readers that misery and happiness must coexist. The law of nature, the way of living intended by God and demonstrated by Malthus’s population theory, requires both wealth and poverty to function.

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Thomas Malthus (1766 - 1834)

L'inconnu le plus cã©lã¨bre en dã©mographie.

Malthus est né en 1766 en Angleterre dans le foyer d'un propriétaire terrien très cultivé, ami du philosophe David Hume et même de Jean-Jacques Rousseau. Lui-même devient pasteur anglican après des études à Cambridge, avant d'être nommé en 1805 professeur d'histoire et économie dans un collège de la Compagnie des Indes, où il enseignera jusqu'à sa mort en 1834, menant une vie très sage, entouré de sa femme et de leurs quatre enfants.

Dès sa jeunesse, il philosophe avec les amis de sa famille et suit de près la politique sociale du gouvernement anglais. Celle-ci puise son origine dans une loi des pauvres promulguée par la reine Elizabeth Ière en 1601, soit près de deux siècles plus tôt. Au siècle suivant, elle est réactivée par l'obligation faite aux paroisses de verser une aide aux pauvres. Cette législation se solde par un coût croissan. 1 million de livres en 1770, près de quarante à la fin du siècle.

Beaucoup en viennent à penser que cette charité publique produit de la pauvreté plutôt qu'elle ne la combat, les indigents perdant l'envie de s'en sortir par eux-mêmes.

Malthus s'inscrit dans ce courant de pensée. En 1798, à 32 ans, il publie anonymement un Essay on the Principle of Population as it affects the Future Improvement of Society ( Essai sur le Principe de Population ) puis, sous son nom cette fois, il ne cessera de l'enrichir et le rééditer jusqu'en 1826. 

Dans les premières pages de cet essai appelé à devenir célèbre, il écrit :  « Je pense pouvoir poser franchement deux postulats: premièrement, que la nourriture est nécessaire à l’existence de l’homme ; deuxièmement, que la passion réciproque entre les sexes est une nécessité et restera à peu près ce qu’elle est à présent » . Là-dessus, il lui paraît que la population, lorsque la sexualité est non contenue, croît beaucoup plus vite que la production de nourriture. « Je dis que le pouvoir multiplicateur de la population est infiniment plus grand que le pouvoir de la terre de produire la subsistance de l’homme » , écrit-il.   « Si elle n’est pas freinée, la population s’accroît en progression géométrique [2, 4, 8,...] . Les subsistances ne s’accroissent qu’en progression arithmétique [1, 2, 3,...] ... Les effets de ces deux pouvoirs inégaux doivent être maintenus en équilibre par le moyen de cette loi de la nature qui fait de la nourriture une nécessité vitale pour l’homme. »   

Pour éviter que le déséquilibre entre ressources alimentaires et bouches à nourrir ne conduise à des famines et à un rééquilibrage douloureux par un excès de mortalité, Malthus préconise donc à ses compatriotes de retarder autant que faire se peut l'âge au mariage. Plus tardif il est, moins on est amené à avoir d'enfants. La suggestion est dans l'air du temps car les paysans français de sa génération, précurseurs en matière de limitation des naissances, ont procédé ainsi. Ils se mariaient aussi tard qu'aujourd'hui, bien plus tard en tout cas qu'aux périodes antérieures.

Le pasteur, tout libéral qu'il est, ne perd pas le nord. Il tire de son raisonnement la conclusion de la nocivité de la loi des pauvres. En effet, cette redistribution des revenus encourage les mariages précoces et par là va à l'encontre de l'intérêt général.

La théorie de Malthus, le malthusianisme, est diffusée en France par l'économiste Jean-Baptiste Say , qui lui-même préconise l'émigration comme moyen supplémentaire de limiter la surpopulation.  « Il n’est pas plus sage de retenir les hommes prisonniers dans un pays que de vouloir les y faire naître. Toutes les lois contre l’émigration sont iniques: chacun a le droit d’aller où il se flatte de respirer plus à l’aise; et c’est respirer plus à l’aise que de subsister plus facilement. Veut-on par là conserver le nombre d’hommes que le pays peut nourrir, on le conservera sans ce moyen. Veut-on en avoir plus que le pays ne peut en nourrir, on n’y réussira point. Lorsqu’on empêche une population surabondante de sortir par la porte des frontières, elle sort par la porte des tombeaux, »  écrit ce dernier.

En dépit d'une croissance démographique forte au XIXe siècle, l'Europe va échapper aux périls annoncés par Malthus et Say, un peu du fait de l'émigration, surtout du fait que l'amélioration de la productivité dans l'agriculture et l'industrie va autoriser une croissance des ressources plus rapide que celle de la population.

Le malthusianisme va connaître un regain de vigueur au milieu du XXe siècle, quand les progrès de la médecine dans les pays sous-développés va réduire drastiquement la mortalité infantile dans ces pays et entraîner une croissance très forte de leur population, jusqu'à 3 ou 4% par ans. Du jamais vu. 

En 1968, l'Américain Paul Ehrlich lance l'alarme avec son essai The demographic bomb . Il prédit des famines imminentes et préconise une réduction au plus vite de la natalité. Mais il ne sait pas que, déjà dans la plupart des pays, celle-ci est en train de baisser et que la  « révolution verte »  va quant à elle améliorer considérablement les ressources de la planète. 

Aujourd'hui, avec une population mondiale sur le point de bientôt diminuer , le malthusianisme n'est plus guère d'actualité. Ce n'est plus le manque de nourriture qui menace l'humanité mais le réchauffement climatique et la dégradation de l'environnement.

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