"Population, when unchecked, goes on doubling itself every 25 years or increases in a geometrical ratio"
About this Quote
The rhetorical power comes from the cadence of certainty. “Doubling… every 25 years” has the crisp authority of a timetable; “geometrical ratio” dresses the claim in the prestige of science. Numbers become ethics by other means. If population growth is a force of nature, then hunger and scarcity stop looking like policy failures and start looking like consequences - even punishments - of ignoring arithmetic.
Context matters: Malthus writes amid early industrial capitalism and anxiety about the English poor laws, when elites feared both social unrest and the fiscal burden of supporting the poor. His model supplies an elegant justification for restraint: aid can be recast as interference with “checks” that keep society stable. Subtextually, it’s a theory of governance disguised as demographics. The real target isn’t fertility; it’s the political impulse to soften hardship, because softness, in Malthus’s telling, invites catastrophe.
Quote Details
| Topic | Science |
|---|---|
| Source | Thomas R. Malthus, An Essay on the Principle of Population, 1st ed. (1798), ch. 1 — contains the sentence often rendered: "Population, when unchecked, goes on doubling itself every twenty-five years, or increases in a geometrical ratio." |
| Cite |
Citation Formats
APA Style (7th ed.)
Malthus, Thomas. (2026, January 18). Population, when unchecked, goes on doubling itself every 25 years or increases in a geometrical ratio. FixQuotes. https://fixquotes.com/quotes/population-when-unchecked-goes-on-doubling-itself-3023/
Chicago Style
Malthus, Thomas. "Population, when unchecked, goes on doubling itself every 25 years or increases in a geometrical ratio." FixQuotes. January 18, 2026. https://fixquotes.com/quotes/population-when-unchecked-goes-on-doubling-itself-3023/.
MLA Style (9th ed.)
"Population, when unchecked, goes on doubling itself every 25 years or increases in a geometrical ratio." FixQuotes, 18 Jan. 2026, https://fixquotes.com/quotes/population-when-unchecked-goes-on-doubling-itself-3023/. Accessed 12 Feb. 2026.


