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StandardWhen unchecked, population grows geometrically. Food supply grows only arithmetically.Large printWhen unchecked, population grows geometrically. Food supply grows only arithmetically.Large print · bigger, clearer type
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About this book

What if every hope for a better society runs up against the need to feed more people?

In An Essay on the Principle of Population, Thomas Robert Malthus asks whether people can multiply faster than their food supply. His argument challenges writers who believe society can become nearly perfect. At stake is a hard question: what limits human progress when every life depends on enough to eat?

Malthus turns to travellers’ accounts and the records of past societies to test his principle. He challenges William Godwin’s belief in limitless human improvement and questions whether relief for the poor can deepen poverty. His claims open an argument about population, subsistence and reform that economists, reformers and scientists debate for generations.

What you’ll discover

  • People and their food Follow the reasoning behind Malthus’s claim that population presses against the means of feeding it.
  • Forces that hold numbers back Explore the checks Malthus argues must limit population when food cannot keep pace.
  • Evidence from past societies See how travellers’ accounts and historical records supply examples for a sweeping argument.
  • The challenge to perfection Consider why Malthus disputes Godwin’s hope that removing unjust institutions allows unlimited human improvement.
  • Relief under scrutiny Examine his controversial claim that the English Poor Laws may worsen the hardship they address.

Who will love it

Readers who enjoy sweeping arguments about society, poverty and progress will love this book. It also suits those curious about the origins of modern population debates.

What’s inside

The key ideas, in the 15-minute summary

  1. Plans for happiness face material limits
  2. Multiplication overtakes growth by addition
  3. Population checks carry human costs
  4. More money does not create food
  5. Abundant land releases population growth
  6. Equality cannot remove the food constraint
  7. Improvement does not mean unlimited improvement
  8. Face hardship and work to lessen it
  9. Ask what limits a plan faces

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Philosophy & Ideas

An Essay on the Principle of Population

by Thomas Robert Malthus · 1798

Malthus argues that people multiply faster than food, and tests the claim against Godwin's dream of equality.

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“At the very time when the best men in both worlds were talking only of progress, Malthus saw rocks ahead.”
James Bonar

In short

What if the brightest plan for human happiness fails for a reason as plain as arithmetic? In 1798 Thomas Robert Malthus published an essay that says just that.

An Essay on the Principle of Population by Thomas Robert Malthus, the cover

An Essay on the Principle of Population at a glance

Reading time
About 3 h 20 min2 h 40 min fast, 4 h slow
Length
48,000 words
Library level
Challenging long sentences, a rich vocabulary
First published
1798by Thomas Robert Malthus

Reading time at 238 words a minute (fast 300, slow 200). How long the classics take to read · Updated

From the 15-minute summary · Key idea 1

Two plain facts hold up the argument

Malthus begins by clearing away guesswork. A writer may claim that man will one day become an ostrich, he says, but must first show that necks are lengthening and feathers are growing. He wants to reason only from what experience shows.

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Details
First published
1798
Language
English
Reading time
3 h 55 min
Level
Challenging

Cite this edition

Malthus, Thomas Robert. An Essay on the Principle of Population. Library of Alexandria, 2026, libraryofalexandria.com/products/an-essay-on-the-principle-of-population.

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Questions about An Essay on the Principle of Population

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What is An Essay on the Principle of Population about?

It argues that human numbers tend to grow faster than food, so societies are held in check by misery and vice, including the unhappiness of delayed marriage. Malthus uses this idea to question hopes for a perfectly equal society.

What does geometric and arithmetic growth mean in Malthus?

Geometric growth means doubling again and again, such as one, two, four, eight. Arithmetic growth means adding the same amount each time, such as one, two, three, four. Malthus says population follows the first pattern and food the second.

Who are Godwin and Condorcet in the essay?

They are the thinkers Malthus argues against. William Godwin and the Marquis de Condorcet imagined a future of reason, equality and lengthening life, and Malthus uses their books to test his population argument.

The author

Thomas Robert Malthus

1766–1834 · English economist

Thomas Robert Malthus (1766–1834) was a British political economist and Anglican clergyman. He was born in Surrey, England, and studied at Cambridge. He published An Essay on the Principle of Population in 1798. From 1805, he taught at the East India Company College. He died in Bath, England.

“When unchecked, population grows geometrically. Food supply grows only arithmetically.”
An Essay on the Principle of Population, chapter 1

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