Thomas Robert Malthus

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Thomas Robert Malthus

Thomas Robert Malthus Wellcome L0069037 -crop.jpg
Portrait by John Linnell
Born13/14 February 1766
Died23 December 1834(1834-12-23) (aged 68)
Bath, Somerset, England
Field Demography, macroeconomics
School or
Classical economics
Alma mater Jesus College, Cambridge
Influences David Ricardo, Jean Charles Léonard de Sismondi
Contributions Malthusian growth model

Thomas Robert Malthus FRS ( /ˈmælθəs/ ; 13 February 1766 – 23 December 1834) [1] was an English cleric and scholar, influential in the fields of political economy and demography. [2]

Fellow of the Royal Society Elected Fellow of the Royal Society, including Honorary, Foreign and Royal Fellows

Fellowship of the UK Royal Society is an award granted to individuals that the Royal Society of London judges to have made a 'substantial contribution to the improvement of natural knowledge, including mathematics, engineering science, and medical science'.

Political economy Study of production, buying, and selling, and their relations with law, custom, and government

Political economy is the study of production and trade and their relations with law, custom and government; and with the distribution of national income and wealth. As a discipline, political economy originated in moral philosophy, in the 18th century, to explore the administration of states' wealth, with "political" signifying the Greek word polity and "economy" signifying the Greek word "okonomie". The earliest works of political economy are usually attributed to the British scholars Adam Smith, Thomas Malthus, and David Ricardo, although they were preceded by the work of the French physiocrats, such as François Quesnay (1694–1774) and Anne-Robert-Jacques Turgot (1727–1781).

Demography The science that deals with populations and their structures statistically and theoretically

Demography is the statistical study of populations, especially human beings.


In his 1798 book An Essay on the Principle of Population , Malthus observed that an increase in a nation's food production improved the well-being of the populace, but the improvement was temporary because it led to population growth, which in turn restored the original per capita production level. In other words, humans had a propensity to utilize abundance for population growth rather than for maintaining a high standard of living, a view that has become known as the "Malthusian trap" or the "Malthusian spectre". Populations had a tendency to grow until the lower class suffered hardship, want and greater susceptibility to famine and disease, a view that is sometimes referred to as a Malthusian catastrophe. Malthus wrote in opposition to the popular view in 18th-century Europe that saw society as improving and in principle as perfectible. [3] He saw population growth as being inevitable whenever conditions improved, thereby precluding real progress towards a utopian society: "The power of population is indefinitely greater than the power in the earth to produce subsistence for man". [4] As an Anglican cleric, Malthus saw this situation as divinely imposed to teach virtuous behaviour. [5] Malthus wrote:

<i>An Essay on the Principle of Population</i> Treatise by Thomas Malthus

The book An Essay on the Principle of Population was first published anonymously in 1798, but the author was soon identified as Thomas Robert Malthus. The book predicted a grim future, as population would increase geometrically, doubling every 25 years, but food production would only grow arithmetically, which would result in famine and starvation, unless births were controlled.

Malthusian trap

The Malthusian trap or population trap is a condition whereby excess population would stop growing due to shortage of food supply leading to starvation. It is named for Thomas Robert Malthus, who suggested that while technological advances could increase a society's supply of resources, such as food, and thereby improve the standard of living, the resource abundance would enable population growth, which would eventually bring the per capita supply of resources back to its original level. Some economists contend that since the industrial revolution, mankind has broken out of the trap. Others argue that the continuation of extreme poverty indicates that the Malthusian trap continues to operate. Others further argue that due to lack of food availability coupled with excessive pollution, developing countries show more evidence of the trap.

Famine widespread scarcity of food followed by regional malnutrition, starvation, epidemic, and increased mortality

A famine is a widespread scarcity of food, caused by several factors including war, inflation, crop failure, population imbalance, or government policies. This phenomenon is usually accompanied or followed by regional malnutrition, starvation, epidemic, and increased mortality. Every inhabited continent in the world has experienced a period of famine throughout history. In the 19th and 20th century, it was generally Southeast and South Asia, as well as Eastern and Central Europe that suffered the most deaths from famine. The numbers dying from famine began to fall sharply from the 2000s.

That the increase of population is necessarily limited by the means of subsistence,
That population does invariably increase when the means of subsistence increase, and,
That the superior power of population is repressed by moral restraint, vice and misery. [6]

Malthus criticized the Poor Laws for leading to inflation rather than improving the well-being of the poor. [7] He supported taxes on grain imports (the Corn Laws), because food security was more important than maximizing wealth. [8] His views became influential, and controversial, across economic, political, social and scientific thought. Pioneers of evolutionary biology read him, notably Charles Darwin and Alfred Russel Wallace. [9] [10] He remains a much-debated writer.

English Poor Laws Laws regarding poverty in England, 16th–19th century

The English Poor Laws were a system of poor relief which existed in England and Wales that developed out of late-medieval and Tudor-era laws being codified in 1587–98. The Poor Law system was in existence until the emergence of the modern welfare state after the Second World War.

The Corn Laws were tariffs and other trade restrictions on imported food and grain ("corn") enforced in Great Britain between 1815 and 1846. The word "corn" in the English spoken in nineteenth century Britain denotes all cereal grains, such as wheat and barley. They were designed to keep grain prices high to favour domestic producers, and represented British mercantilism. The Corn Laws imposed steep import duties, making it too expensive to import grain from abroad, even when food supplies were short.

Evolutionary biology Study of the processes that produced the diversity of life

Evolutionary biology is the subfield of biology that studies the evolutionary processes that produced the diversity of life on Earth, starting from a single common ancestor. These processes include natural selection, common descent, and speciation.

Malthus himself used only his middle name, Robert. [11]

Early life and education

The sixth [12] child of Henrietta Catherine (Graham) and Daniel Malthus, [13] [14] Robert Malthus grew up in The Rookery, a country house in Westcott, near Dorking in Surrey. Thomas was bullied from an early age because of his syndactyly, or webbed feet. This sparked his controversial ideas about eugenics. Petersen describes Daniel Malthus as "a gentleman of good family and independent means... [and] a friend of David Hume and Jean-Jacques Rousseau". [15] The young Malthus received his education at home in Bramcote, Nottinghamshire, and then at the Warrington Academy from 1782. Warrington was a dissenting academy, which closed in 1783; Malthus continued for a period to be tutored by Gilbert Wakefield who had taught him there. [16]

Westcott, Surrey village in Surrey, United Kingdom

Westcott is a semi-rural English village and former civil parish 1.5 miles (2.4 km) west of the centre of Dorking on the A25 between the North Downs and Greensand Ridge, making it one of the 'Vale of Holmesdale' villages and is in Surrey in the direction of Guildford. It is served by a local bus service and is 1 mile (1.6 km) from Dorking West railway station on the North Downs Line.

Dorking historic market town in Surrey, England

Dorking is a market town in Surrey, England between Ranmore Common in the North Downs range of hills and Leith Hill in the Greensand Ridge, centred 21 miles (34 km) from London.

Surrey County of England

Surrey is a county in South East England which borders Kent to the east, West Sussex to the south, Hampshire to the west, Berkshire to the northwest, and Greater London to the northeast.

Malthus entered Jesus College, Cambridge in 1784. While there he took prizes in English declamation, Latin and Greek, and graduated with honours, Ninth Wrangler in mathematics. His tutor was William Frend. [16] [17] He took the MA degree in 1791, and was elected a Fellow of Jesus College two years later. [11] In 1789, he took orders in the Church of England, and became a curate at Oakwood Chapel (also Okewood) in the parish of Wotton, Surrey. [18]

Population growth

Essay on the principle of population, 1826 Malthus - Essay on the principle of population, 1826 - 5884843.tif
Essay on the principle of population, 1826

Malthus was a demographer before he was ever considered an economist. He first came to prominence for his 1798 publication, An Essay on the Principle of Population. In it, he raised the question of how population growth related to the economy. He affirmed that there were many events, good and bad, that affected the economy is ways no one had ever deliberated upon before. The main point of his essay was that population multiplies geometrically and food arithmetically; therefore, whenever the food supply increases, population will rapidly grow to eliminate the abundance. Thus eventually, in the future, there wouldn’t be enough food for the whole of humanity to consume and people would starve. Until that point, however, the more food made available, the more the population would increase. He also stated that there was a fight for survival amongst humans, and that only the strong who could attain food and other needs would survive, unlike the impoverished population he saw during his time period.

Malthus wrote the original text in reaction to the optimism of his father and his father's associates (notably Rousseau) regarding the future improvement of society. He also constructed his case as a specific response to writings of William Godwin (1756–1836) and of the Marquis de Condorcet (1743–1794). His assertions evoked questions and criticism, and between 1798 and 1826 he published six more versions of An Essay on the Principle of Population, updating each edition to incorporate new material, to address criticism, and to convey changes in his own perspectives on the subject. Even so, the propositions made in An Essay were shocking to the public and largely disregarded during the 19th century. The negativity surrounding his essay created a space filled with opinions on population growth, connected with either praise or criticism of ideas about contraception and the future of agriculture.

The Malthusian controversy to which the Essay gave rise in the decades following its publication tended to focus attention on the birth rate and marriage rates. The neo-Malthusian controversy, comprising related debates of many years later, has seen a similar central role assigned to the numbers of children born. [19] On the whole it may be said that Malthus's revolutionary ideas in the sphere of population growth remain relevant to economic thought even today and continue to make economists ponder about the future.

Travel and further career

In 1799 Malthus made a European tour with William Otter, a close college friend, travelling part of the way with Edward Daniel Clarke and John Marten Cripps, visiting Germany, Scandinavia and Russia. Malthus used the trip to gather population data. Otter later wrote a Memoir of Malthus for the second (1836) edition of his Principles of Political Economy. [20] [21] During the Peace of Amiens of 1802 he travelled to France and Switzerland, in a party that included his relation and future wife Harriet. [22]

In 1803 he became rector of Walesby, Lincolnshire. [11]

In 1805 Malthus became Professor of History and Political Economy at the East India Company College in Hertfordshire. [23] His students affectionately referred to him as "Pop", "Population", or "web-toe" Malthus.

Near the end of 1817 the proposed appointment of Graves Champney Haughton to the College was made a pretext by Randle Jackson and Joseph Hume to launch an attempt to close it down. Malthus wrote a pamphlet defending the College, which was reprieved by the East India Company within the same year, 1817. [24]

In 1818 Malthus became a Fellow of the Royal Society.

Malthus–Ricardo debate on political economy

During the 1820s there took place a setpiece intellectual discussion among the exponents of political economy, often called the "Malthus–Ricardo debate" after its leading figures, Malthus and theorist of free trade David Ricardo, both of whom had written books with the title Principles of Political Economy. Under examination were the nature and methods of political economy itself, while it was simultaneously under attack from others. [25] The roots of the debate were in the previous decade. In The Nature of Rent (1815), Malthus had dealt with economic rent, a major concept in classical economics. Ricardo defined a theory of rent in his Principles of Political Economy and Taxation (1817): he regarded rent as value in excess of real production—something caused by ownership rather than by free trade. Rent therefore represented a kind of negative money that landlords could pull out of the production of the land, by means of its scarcity. [26] Contrary to this concept, Malthus proposed rent to be a kind of economic surplus.[ citation needed ]

The debate developed over the economic concept of a general glut, and the possibility of failure of Say's Law. Malthus laid importance on economic development and the persistence of disequilibrium. [27] The context was the post-war depression; Malthus had a supporter in William Blake, in denying that capital accumulation (saving) was always good in such circumstances, and John Stuart Mill attacked Blake on the fringes of the debate. [28]

Ricardo corresponded with Malthus from 1817 about his Principles. He was drawn into considering political economy in a less restricted sense, which might be adapted to legislation and its multiple objectives, by the thought of Malthus. Malthus in his own work Principles of Political Economy (1820) and elsewhere, addressed the tension, amounting to conflict, he saw between a narrow view of political economy, and the broader moral and political plane. [29] Leslie Stephen wrote:

If Malthus and Ricardo differed, it was a difference of men who accepted the same first principles. They both professed to interpret Adam Smith as the true prophet, and represented different shades of opinion rather than diverging sects. [30]

After Ricardo's death in 1823, Malthus became isolated among the younger British political economists, who tended to think he had lost the debate.[ citation needed ]It is now considered that the different purposes seen by Malthus and Ricardo for political economy affected their technical discussion, and contributed to the lack of compatible definitions. [27] For example, Jean-Baptiste Say used a definition of production based on goods and services and so queried the restriction of Malthus to "goods" alone. [31]

In terms of public policy, Malthus was a supporter of the protectionist Corn Laws from the end of the Napoleonic Wars. He emerged as the only economist of note to support duties on imported grain. [32] He changed his mind after 1814. By encouraging domestic production, Malthus argued, the Corn Laws would guarantee British self-sufficiency in food. [33]

Later life

Malthus was a founding member of the Political Economy Club in 1821; there John Cazenove tended to be his ally, against Ricardo and Mill. [34] He was elected in the beginning of 1824 as one of the ten royal associates of the Royal Society of Literature. He was also one of the first fellows of the Statistical Society, founded in March 1834. In 1827 he gave evidence to a committee of the House of Commons on emigration. [35]

In 1827, he published Definitions in Political Economy, preceded by an inquiry into the rules which ought to guide political economists in the definition and use of their terms; with remarks on the deviation from these rules in their writings. [36] The first chapter put forth "Rules for the Definition and Application of Terms in Political Economy". In chapter 10, the penultimate chapter, he presented 60 numbered paragraphs putting forth terms and their definitions that he proposed, following those rules, should be used in discussing political economy. This collection of terms and definitions is remarkable for two reasons: first, Malthus was the first economist to explicitly organize, define, and publish his terms as a coherent glossary of defined terms; and second, his definitions were, for the most part, well-formed definitional statements. Between these chapters, he criticized several contemporary economists—Jean-Baptiste Say, David Ricardo, James Mill, John Ramsay McCulloch, and Samuel Bailey—for sloppiness in choosing, attaching meaning to, and using their technical terms. [37]

McCulloch was the editor of The Scotsman of Edinburgh; he replied cuttingly in a review printed on the front page of his newspaper in March, 1827. [38] He implied that Malthus wanted to dictate terms and theories to other economists. McCulloch clearly felt his ox gored, and his review of Definitions is largely a bitter defence of his own Principles of Political Economy, [39] and his counter-attack "does little credit to his reputation", being largely "personal derogation" of Malthus. [40] The purpose of Malthus's Definitions was terminological clarity, and Malthus discussed appropriate terms, their definitions, and their use by himself and his contemporaries. This motivation of Malthus's work was disregarded by McCulloch, who responded that there was nothing to be gained "by carping at definitions, and quibbling about the meaning to be attached to" words. Given that statement, it is not surprising that McCulloch's review failed to address the rules of chapter 1 and did not discuss the definitions of chapter 10; he also barely mentioned Malthus's critiques of other writers. [37]

In spite of this, in the wake of McCulloch's scathing review, the reputation of Malthus as economist dropped away, for the rest of his life. [41] On the other hand, Malthus did have supporters: Thomas Chalmers, some of the Oriel Noetics, Richard Jones and William Whewell from Cambridge. [42]

Malthus died suddenly of heart disease on 23 December 1834, at his father-in-law's house. He was buried in Bath Abbey. [35] His portrait, [43] and descriptions by contemporaries, present him as tall and good-looking, but with a cleft lip and palate. [44] The cleft palate affected his speech: such birth defects had occurred before amongst his relatives. [45]


On 13 March 1804, Malthus married Harriet, daughter of John Eckersall of Claverton House, near Bath. They had a son and two daughters. His firstborn, son Henry, became vicar of Effingham, Surrey, in 1835, and of Donnington, Sussex, in 1837; he married Sofia Otter (1807–1889), daughter of Bishop William Otter, and died in August 1882, aged 76. His middle child, Emily, died in 1885, outliving her parents and siblings. The youngest, Lucille, died unmarried and childless in 1825, months before her 18th birthday. [35]

An Essay on the Principle of Population

Malthus argued in his Essay (1798) that population growth generally expanded in times and in regions of plenty until the size of the population relative to the primary resources caused distress:

Yet in all societies, even those that are most vicious, the tendency to a virtuous attachment [i.e., marriage] is so strong that there is a constant effort towards an increase of population. This constant effort as constantly tends to subject the lower classes of the society to distress and to prevent any great permanent amelioration of their condition.

Malthus, T. R. 1798. An Essay on the Principle of Population. Chapter II, p. 18 in Oxford World's Classics reprint.

Malthus argued that two types of checks hold population within resource limits: positive checks, which raise the death rate; and preventive ones, which lower the birth rate. The positive checks include hunger, disease and war; the preventive checks: birth control, postponement of marriage and celibacy. [46]

The rapid increase in the global population of the past century exemplifies Malthus's predicted population patterns; it also appears to describe socio-demographic dynamics of complex pre-industrial societies. These findings are the basis for neo-malthusian modern mathematical models of long-term historical dynamics. [47]

Malthus wrote that in a period of resource abundance, a population could double in 25 years. However, the margin of abundance could not be sustained as population grew, leading to checks on population growth:

If the subsistence for man that the earth affords was to be increased every twenty-five years by a quantity equal to what the whole world at present produces, this would allow the power of production in the earth to be absolutely unlimited, and its ratio of increase much greater than we can conceive that any possible exertions of mankind could make it ... yet still the power of population being a power of a superior order, the increase of the human species can only be kept commensurate to the increase of the means of subsistence by the constant operation of the strong law of necessity acting as a check upon the greater power.

Malthus T. R. 1798. An Essay on the Principle of Population. Chapter 2, p. 8 [48]

In later editions of his essay, Malthus clarified his view that if society relied on human misery to limit population growth, then sources of misery (e.g., hunger, disease, and war) would inevitably afflict society, as would volatile economic cycles. On the other hand, "preventive checks" to population that limited birthrates, such as later marriages, could ensure a higher standard of living for all, while also increasing economic stability. [49] Regarding possibilities for freeing man from these limits, Malthus argued against a variety of imaginable solutions, such as the notion that agricultural improvements could expand without limit. [50]

Of the relationship between population and economics, Malthus wrote that when the population of laborers grows faster than the production of food, real wages fall because the growing population causes the cost of living (i.e., the cost of food) to go up. Difficulties of raising a family eventually reduce the rate of population growth, until the falling population again leads to higher real wages.

In the second and subsequent editions Malthus put more emphasis on moral restraint as the best means of easing the poverty of the lower classes." [51]

Editions and versions

Other works

1800: The present high price of provisions

In this work, his first published pamphlet, Malthus argues against the notion prevailing in his locale that the greed of intermediaries caused the high price of provisions. Instead, Malthus says that the high price stems from the Poor Laws, which "increase the parish allowances in proportion to the price of corn." Thus, given a limited supply, the Poor Laws force up the price of daily necessities. But he concludes by saying that in time of scarcity such Poor Laws, by raising the price of corn more evenly, actually produce a beneficial effect. [53]

1814: Observations on the effects of the Corn Laws

Although government in Britain had regulated the prices of grain, the Corn Laws originated in 1815. At the end of the Napoleonic Wars that year, Parliament passed legislation banning the importation of foreign corn into Britain until domestic corn cost 80 shillings per quarter.[ clarification needed ] The high price caused the cost of food to increase and caused distress among the working classes in the towns. It led to serious rioting in London and to the Peterloo Massacre in Manchester in 1819. [54] [55]

In this pamphlet, printed during the parliamentary discussion, Malthus tentatively supported the free-traders. He argued that given the increasing cost of growing British corn, advantages accrued from supplementing it from cheaper foreign sources.

1820: Principles of political economy

In 1820 Malthus published Principles of Political Economy . 1836: Second edition, posthumously published. Malthus intended this work to rival Ricardo's Principles (1817). [56] It, and his 1827 Definitions in political economy, defended Sismondi's views on "general glut" rather than Say's Law, which in effect states "there can be no general glut".[ citation needed ]

Other publications

Reception and influence

Malthus developed the theory of demand-supply mismatches that he called gluts. Discounted at the time, this theory foreshadowed later works of an admirer, John Maynard Keynes. [57]

The vast bulk of continuing commentary on Malthus, however, extends and expands on the "Malthusian controversy" of the early 19th century.


The epitaph of Rev. Thomas Robert Malthus, just inside the entrance to Bath Abbey. Epitaph of Thomas Malthus.jpg
The epitaph of Rev. Thomas Robert Malthus, just inside the entrance to Bath Abbey.

The epitaph of Malthus in Bath Abbey reads [with commas inserted for clarity]:

Sacred to the memory of the Rev THOMAS ROBERT MALTHUS, long known to the lettered world by his admirable writings on the social branches of political economy, particularly by his essay on population.

One of the best men and truest philosophers of any age or country, raised by native dignity of mind above the misrepresentation of the ignorant and the neglect of the great, he lived a serene and happy life devoted to the pursuit and communication of truth, supported by a calm but firm conviction of the usefulness of his labours, content with the approbation of the wise and good.

His writings will be a lasting monument of the extent and correctness of his understanding.

The spotless integrity of his principles, the equity and candour of his nature, his sweetness of temper, urbanity of manners and tenderness of heart, his benevolence and his piety are still dearer recollections of his family and friends.

Born February 14, 1766 - Died 29 December 1834.

See also


  1. Several sources give Malthus's date of death as 15 December 1834. See Meyers Konversationslexikon (Leipzig, 4th edition, 1885–1892), "Biography" by Nigel Malthus (the memorial transcription reproduced in this article). But article in Wikisource-logo.svg  "Malthus, Thomas Robert"  . Encyclopædia Britannica . 17 (11th ed.). 1911. p. 515. gives 23 December 1834.
  2. Petersen, William (1979). Malthus: Founder of Modern Demography. Cambridge, Massachusetts: Harvard University Press. p. 19. ISBN   9780674544253.
  3. Geoffrey Gilbert, introduction to Malthus T.R. 1798. An Essay on the Principle of Population. Oxford World's Classics reprint. viii in Oxford World's Classics reprint.
  4. Malthus, Thomas Robert. An Essay on the Principle of Population . Oxfordshire, England: Oxford World's Classics. p. 13. ISBN   978-1450535540.
  5. Bowler, Peter J. (2003). Evolution: The History of an Idea. Berkeley, California: University of California Press. pp. 104–05. ISBN   978-0-520-23693-6.
  6. Malthus, page 61
  7. Malthus, pp. 39–45
  8. Malthus, pp. xx
  9. Browne, Janet (1995). Charles Darwin: Voyaging. New York City: Random House. pp. 385–90. ISBN   978-1407053202.
  10. Raby, Peter (2001). Alfred Russel Wallace: a Life. Princeton, New Jersey: ]Princeton University Press. pp. 21, 131. ISBN   0-691-00695-4.
  11. 1 2 3 "Malthus, Thomas Robert (MLTS784TR)". A Cambridge Alumni Database. University of Cambridge.
  12. "Malthus, Thomas Robert" . Retrieved 4 January 2019.
  13. "Malthus TRM Biography" . Retrieved 13 February 2010.
  14. "Thomas Robert Malthus -".
  15. Petersen, William. 1979. Malthus. Heinemann, London. 2nd ed 1999. p. 21
  16. 1 2 Avery, John (1997). Progress, Poverty and Population: Re-Reading Condorcet, Godwin and Malthus. London, England: Psychology Press. pp. 56–57. ISBN   978-0-7146-4750-0 . Retrieved 14 June 2013.
  17. Petersen, William. 1979. Malthus. Heinemann, London. 2nd ed 1999. p. 28
  18. Malthus, Thomas Robert (1997). T.R. Malthus: The Unpublished Papers in the Collection of Kanto Gakuen University. Cambridge, England: Cambridge University Press. p. 54 note 196. ISBN   978-0-521-58138-7 . Retrieved 14 June 2013.
  19. Griffith, G. Talbot (9 December 2010). Population Problems of the Age of Malthus. Cambridge, England: Cambridge University Press. p. 97. ISBN   0-691-10240-6 . Retrieved 14 June 2013.
  20. Lee, Sidney, ed. (1895). "Otter, William"  . Dictionary of National Biography . 42. London: Smith, Elder & Co.
  21. Burns, Arthur. "Otter, William". Oxford Dictionary of National Biography (online ed.). Oxford University Press. doi:10.1093/ref:odnb/20935.(Subscription or UK public library membership required.)
  22. de Caritat Condorcet (marquès de), Jean-Antoine-Nicolas; Godwin, William; Malthus, Thomas Robert (1997). Avery, John (ed.). Progress, Poverty and Population: Re-Reading Condorcet, Godwin and Malthus. Abingdon, England: Routledge. p. 64. ISBN   978-0-7146-4750-0 . Retrieved 14 June 2013.
  23. Malthus T. R. 1798. The Essay of the Population Principle. Oxford World's Classics reprint: xxix, Chronology.
  24. Thomas Robert Malthus (1997). T.R. Malthus: The Unpublished Papers in the Collection of Kanto Gakuen University. Cambridge University Press. p. 120 notes. ISBN   978-0-521-58138-7 . Retrieved 14 June 2013.
  25. Poovey, Mary (1 December 1998). A History of the Modern Fact: Problems of Knowledge in the Sciences of Wealth and Society. Chicago, Illinois: University of Chicago Press. p. 295. ISBN   978-0-226-67525-1 . Retrieved 14 June 2013.
  26. On The Principles of Political Economy and Taxation, London: John Murray, Albemarle-Street, by David Ricardo, 1817 (third edition 1821) – Chapter 6, On Profits: paragraph 28, "Thus, taking the former ..." and paragraph 33, "There can, however ..."
  27. 1 2 Sowell, pp. 193–4.
  28. Winch, Donald (26 January 1996). Riches and Poverty: An Intellectual History of Political Economy in Britain, 1750–1834. Cambridge, England: Cambridge University Press. p. 365. ISBN   978-0-521-55920-1 . Retrieved 14 June 2013.
  29. Stefan Collini; Donald Winch; John Wyon Burrow (1983). That Noble Science of Politics: A Study in Nineteenth Century Intellectual History. CUP Archive. p. 65. ISBN   978-0-521-27770-9 . Retrieved 14 June 2013.
  30. Leslie Stephen (1 March 2006). The English Utilitarians. 1. Continuum International Publishing Group. p. 238. ISBN   978-0-8264-8816-9 . Retrieved 14 June 2013.
  31. Samuel Hollander (14 January 2005). Jean-Baptiste Say and the Classical Canon in Economics: The British Connection in French Classicism. Taylor & Francis. p. 170. ISBN   978-0-203-02228-3 . Retrieved 14 June 2013.
  32. Geoffrey Gilbert, introduction to Malthus T.R. 1798. An Essay on the Principle of Population. Oxford World's Classics reprint. xx in Oxford World's Classics series. xx
  33. Cannan E. 1893. A History of the Theories of Production and Distribution in English Political Economy from 1776 to 1848. Kelly, New York.
  34. Thomas Robert Malthus (1989). Principles of Political Economy. Cambridge University Press. p. lxviii. ISBN   978-0-521-24775-7 . Retrieved 14 June 2013.
  35. 1 2 3 Lee, Sidney, ed. (1893). "Malthus, Thomas Robert"  . Dictionary of National Biography . 36. London: Smith, Elder & Co.
  36. Malthus, Thomas Robert (1827). Definitions in Political Economy. London: John Murray.
  37. 1 2 Malthus, Thomas Robert (2016). Definitions in Political Economy. McLean: Berkeley Bridge Press. ISBN   978-1-945208-01-0.
  38. McCulloch, John Ramsay (10 March 1827). "A Review of Definitions in Political Economy by the Rev. T. R. Malthus". The Scotsman: 1.
  39. McCulloch, John Ramsay (1825). The Principles of Political Economy. Edinburgh: William & Charles Tait.
  40. Morton Paglin's "Introduction" to: Malthus, Thomas Robert (1986). Definitions in Political Economy. Fairfield, New Jersey: Augustus M. Kelley. p. xiii.
  41. James P. Huzel (1 January 2006). The Popularization of Malthus in Early Nineteenth-Century England: Martineau, Cobbett And the Pauper Press. Ashgate Publishing, Ltd. p. 38. ISBN   978-0-7546-5427-8 . Retrieved 14 June 2013.
  42. Donald Winch (26 January 1996). Riches and Poverty: An Intellectual History of Political Economy in Britain, 1750–1834. Cambridge University Press. pp. 371–72. ISBN   978-0-521-55920-1.
  43. Painted by Linnell, and seen here in a cropped and scanned monochrome version.
  44. Hodgson, M.H (2007). "Malthus, Thomas Robert (1766–1834)". In Rutherford, Donald (ed.). Biographical Dictionary of British Economists. London, England: Bloomsbury Academic. ISBN   9781843711513.
  45. Martineau, Harriet 1877. Autobiography. 3 vols, Smith, Elder, London. vol 1, p. 327.
  46. Geoffrey Gilbert, introduction to Malthus T.R. 1798. An Essay on the Principle of Population. Oxford World's Classics reprint. viii
  47. See, e.g., Peter Turchin 2003; Turchin and Korotayev 2006 Archived 29 February 2012 at the Wayback Machine ; Peter Turchin et al. 2007; Korotayev et al. 2006.
  48. Oxford World's Classics reprint
  49. Essay (1826), I:2. See also A:1:17
  50. Malthus, Thomas Robert (1 December 2011). An Essay on the Principle of Population (Two Volumes in One). Cosimo, Inc. pp. 5–11. ISBN   9781616405700.
  51. Geoffrey Gilbert, introduction to Malthus T.R. 1798. An Essay on the Principle of Population. Oxford World's Classics reprint, p. xviii
  52. dates from Malthus T.R. 1798. An Essay on the Principle of Population. Oxford World's Classics reprint: xxix Chronology.
  53. 1800: The present high price of provisions, paragraph 26
  54. Hirst, Francis Wrigley (1925). From Adam Smith to Philip Snowden: a History of Free Trade in Great Britain. London, England: T. Fisher Unwin. p. 88. ASIN   B007T0ONNO.
  55. Hobsbawm, Eric (1999). Industry and Empire: The Birth of the Industrial Revolution. New York City: The New Press. p. 175. ISBN   978-1565845619. The Corn Laws... safeguarded farmers from the consequences of their wartime euphoria, when farms had changed hands at the fanciest prices, loans and mortgages had been accepted on impossible terms
  56. See Malthus, Thomas Robert (1820). "Principles of Political Economy Considered with a View of their Practical Application" (1 ed.). London: John Murray. Retrieved 7 December 2012.
  57. Steven G. Medema; Warren J. Samuels (2003). The History of Economic Thought: A Reader. Routledge. p. 291. ISBN   978-0-415-20550-4 . Retrieved 14 June 2013.
  58. Dickens, Charles (1845). A Christmas carol in prose. Bradword, Evans. p. 14.
  59. Paroissien, David (2008). A companion to Charles Dickens. John Wiley and Sons. ISBN   978-1-4051-3097-4.
  60. "Avengers: Infinity War-Thanos, the Malthusian Purple Dude is the Best Villain of MCU". News18. Retrieved 27 April 2018.
  61. Orr, Christopher. "'Avengers: Infinity War' Is an Extraordinary Juggling Act". The Atlantic. Retrieved 27 April 2018.

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