summary of an essay on the principle of population

Malthus�s Population Principle Explained

By Frank W. Elwell

This essay is a faithful summary of Malthus�s original 1798 �Principle of Population .� While nothing will substitute for reading the original essay with an open mind, I hope this summary will go some way toward rehabilitating this man�s reputation.

Here is the key to that riddle: Malthus made the mistake of illustrating the unequal powers of production and reproduction with a mathematical illustration. He supposes that when unchecked, the earth�s human population would double every twenty-five years (a good estimate consistent with current knowledge). Agricultural production at best, he argues, could not possibly keep pace.

He knows full well that population cannot grow long beyond the means of subsistence (�population must always be kept down to the means of subsistence�), he is simply trying to illustrate to his readers the unequal powers of growth in population and food production and therefore the necessity of checks on population. At one point in the Essay he even states: �I am sufficiently aware that the redundant twenty-eight millions, or seventy-seven millions, that I have mentioned, could never have existed� (63). But for various reasons many critics have taken this mental experiment as the theory of population itself and delight in writing that Malthus was wrong, that overshoot and collapse did not occur. Contrary to popular belief (and the belief of many who should know better), Malthus did not predict a future in which population would outrun food supply and eventually collapse.

Other critics write that Malthus was wrong because he did not take into account the possibility of dramatic increases in the production of food. Many criticize him for not taking into account the revolution in agriculture. But he anticipated this argument as well:

No limits whatever are placed to the productions of the earth; they may increase for ever and be greater than any assignable quantity, 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 (9-10).

What are these checks that Malthus writes about? They are of two types: �Preventive checks� come into play through the �foresight of the difficulties attending the rearing of a family� (22). They include celibacy, contraception, and various forms of non-procreative sex. �Positive checks,� are the �actual distresses of some of the lower classes, by which they are disabled from giving the proper food and attention to their children� (22). Under this heading Malthus includes extreme poverty, diseases, plague, malnutrition, wars, infanticide, and famine. Positive checks are far more likely to operate within poor populations; preventive checks among the upper classes. In Malthus�s view, both positive and preventive checks�or the ways a people go about controlling their fertility�will greatly impact the rest of the sociocultural system.

Malthus�s principle of population is basically the law of supply and demand applied to the relationships between food production and population growth , which he makes clear time and again throughout the Essay. As the food supply increases, food becomes cheaper, and more children are brought into the world. As there are more mouths to feed, food becomes more expensive, thus causing stress on families, more children dying or steps taken to prevent conception itself. As food prices rise, more land is put under the plow, or greater efforts made in intensifying the production of the land itself.

Because people can reproduce faster than they can increase the production of food, population must always be checked through positive or preventive means. This and nothing more, is Malthus�s �Principle of Population.� Over the course of sociocultural evolution, however, the long-term tendency has been for both productivity and population to intensify. This reciprocal growth, of course, has great effect on other parts of the sociocultural system.

For a more extensive discussion of Malthus�s theories refer to Macro Social Theory by Frank W. Elwell.  Also see Sociocultural Systems: Principles of Structure and Change to learn how his insights contribute to a more complete understanding of modern societies.

Bibliography

Elwell, F. (2009), Macrosociology: The Study of Sociocultural Systems . Lewiston: Edwin Mellen Press.

Elwell, F. (2013), Sociocultural Systems: Principles of Structure and Change. Alberta: Athabasca University Press.

Malthus, T. R. (Thomas Robert) (2012-05-12). An Essay on the Principle of Population.   Kindle Edition.

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Elwell, Frank W., 2003, "Malthus's Population Principle Explained," Retrieved August 31, 2013, [use actual date] http://www.faculty.rsu.edu/~felwell/Theorists/Essay/Malthus1.htm 

�2013 Frank Elwell, Send comments to felwell at rsu.edu

Malthus on Population

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An Essay on the Principle of Population ; Exponential growth ; Malthusian growth

An Essay on the Principle of Population by Thomas Robert Malthus ( 1798 ) is a book widely viewed as having profound impact on the biological and social sciences by recognizing basic biophysical, demographic, and economic principles that can lead to population growth and possible collapse.

Introduction

Be fruitful and multiply. Fill the earth and govern it. Reign over the fish in the sea, the birds in the sky, and all the animals that scurry along the ground. – Genesis 1:28

The power of population is indefinitely greater than the power in the earth to produce subsistence. – Malthus 1798

An Essay on the Principle of Population by the Reverend, Political Economist, and Demographer, Thomas Robert Malthus (1766–1834), is perhaps the most important document ever published on population, yet its central thesis continues to be highly controversial between natural and social scientists today....

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• An Essay on the Principle of Population Summary

by Thomas Malthus

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Malthus observes that humans tend to like having sex, which means that inevitably (especially before modern contraceptives) humans would likely continue to make children at a constant rate. But since two people can have more than two children, and each of those children can have even more children, population growth is not arithmetical, but rather geometric.

What Malthus means by 'arithmetical' and 'geometric' is simply that some systems produce at the level of addition and subtraction, and other systems work differently. If it works by process of addition, it is arithmetical, and if it works by process of multiplication, such as population growth, it is geometric.

So Malthus concludes from that basic study of the systems of population growth that we can expect the population to double every 25 years. By the way, Malthus's mathematical analysis is understood by most people to be incorrect, but his idea is still powerful. Could humans populate at such a rate that eventually, we exhaust our resources, and what would happen if that were the case?

He then explains that he is not predicting a doomsday, or an apocalypse, but rather, that given our understanding of mathematics, humans should begin to consider their effect on the environment as an exponentially powerful animal, since our biological existence means that we must sustain ourselves by using natural resources.

Malthus continues by explaining that many of the variables in the sustainability question are fluid, such as the potential development of new technologies to advance agriculture and infrastructure. Instead of offering a creative solution, he leaves the question open for audience participation, because after all, we're all on the same planet, so overpopulation is a risk that could potentially effect the entire race if not treated with scientific attention.

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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.

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Antony Flew is emeritus professor of philosophy in the University of Reading, England. He has also served as visiting professor in institutions in North America, Africa, and Australia. He has published much on many different philosophical questions, especially those of interest both to academic philosophers and to a wider public.

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An Essay on the Principle of Population, 2 vols. [1826, 6th ed.]

• Thomas Robert Malthus (author)

This is the 6th expanded edition of Essay on the Principle of Population. In this work Malthus argues that there is a disparity between the rate of growth of population (which increases geometrically) and the rate of growth of agriculture (which increases only arithmetically). He then explores how populations have historically been kept in check.

Volumes in this Set:

• An Essay on the Principle of Population, vol. 1 [1826, 6th ed.]
• An Essay on the Principle of Population, vol. 2 [1826, 6th ed.]

An Essay on the Principle of Population, or a View of its Past and Present Effects on Human Happiness; with an Inquiry into our Prospects respecting the Future Removal or Mitigation of the Evils which it Occasions (London: John Murray 1826). 6th ed. 2 vols.

The text is in the public domain.

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An Essay on the Principle of Population

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"An Essay on the Principle of Population" by Thomas Malthus discusses the potential for population growth to outpace food production, leading to societal issues. Malthus, an English scholar, contributed significantly to demography and political economy. The essay, initially published in 1798, underscores the tension between geometric population growth and arithmetic food supply increase, advocating for preventive checks to manage population growth

An Essay on the Principle of Population

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Thomas Malthus (1766-1834)

Thomas Robert Malthus is an English philosopher and political economist infamous for his theory on the growth of population. He graduated with honors from Jesus College at the University of Cambridge in 1791 and excelled in mathematics. He was good friends with economist David Hume—whom he credited for inspiration in his work — and Genevan philosopher Jean-Jacques Rousseau.

In 1805, two years after publishing the revised edition of his Essay on the Principle of Population, he began work at the East India Company College in Hertfordshire as a professor of history and political economy. Malthus is a founding member of the Political Economy Club created by economist James Mill in 1821. However, a debate with Scottish economist John Ramsay McCulloch cost Malthus his reputation in 1827. Although some still adhered to Malthus’s theories, he had largely lost credibility by the end of his life. Malthus died of heart disease in 1834.

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